Vocabulary (O)

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Serial Word Meaning
1 oaken adj. Made of or from oak
2 oakum n. Hemp-fiber obtained by untwisting and picking out loosely the yarns of old hemp rope
3 obdurate adj. Impassive to feelings of humanity or pity
4 obelisk n. A square shaft with pyramidal top, usually monumental or commemorative
5 obese adj. Exceedingly fat
6 obesity n. Excessive fatness
7 obituary adj. A published notice of a death
8 objective adj. Grasping and representing facts as they are
9 objector n. One who objects, as to a proposition, measure, or ruling
10 obligate v. To hold to the fulfillment of duty
11 obligatory adj. Binding in law or conscience
12 oblique adj. Slanting; said of lines
13 obliterate v. To cause to disappear
14 oblivion n. The state of having passed out of the memory or of being utterly forgotten
15 oblong adj. Longer than broad: applied most commonly to rectangular objects considerably elongated
16 obnoxious adj. Detestable
17 obsequies n. Funeral rites
18 obsequious adj. Showing a servile readiness to fall in with the wishes or will of another
19 observance n. A traditional form or customary act
20 observant adj. Quick to notice
21 observatory n. A building designed for systematic astronomical observations
22 obsolescence n. The condition or process of gradually falling into disuse
23 obsolescent adj. Passing out of use, as a word
24 obsolete adj. No longer practiced or accepted
25 obstetrician n. A practitioner of midwifery
26 obstetrics n. The branch of medical science concerned with the treatment and care of women during pregnancy
27 obstinacy n. Stubborn adherence to opinion, arising from conceit or the desire to have one’s own way
28 obstreperous adj. Boisterous
29 obstruct v. To fill with impediments so as to prevent passage, either wholly or in part
30 obstruction n. Hindrance
31 obtrude v. To be pushed or to push oneself into undue prominence
32 obtrusive adj. Tending to be pushed or to push oneself into undue prominence
33 obvert v. To turn the front or principal side of (a thing) toward any person or object
34 obviate v. To clear away or provide for, as an objection or difficulty
35 occasion n. An important event or celebration
36 Occident n. The countries lying west of Asia and the Turkish dominions
37 occlude v. To absorb, as a gas by a metal
38 occult adj. Existing but not immediately perceptible
39 occupant n. A tenant in possession of property, as distinguished from the actual owner
40 occurrence n. A happening
41 octagon n. A figure with eight sides and eight angles
42 octave n. A note at this interval above or below any other, considered in relation to that other
43 octavo n. A book, or collection of paper in which the sheets are so folded as to make eight leaves
44 octogenarian adj. A person of between eighty and ninety years
45 ocular adj. Of or pertaining to the eye
46 oculist n. One versed or skilled in treating diseases of the eye
47 oddity n. An eccentricity
48 ode n. The form of lyric poetry anciently intended to be sung
49 odious adj. Hateful
50 odium n. A feeling of extreme repugnance, or of dislike and disgust
51 odoriferous adj. Having or diffusing an odor or scent, especially an agreeable one
52 odorous adj. Having an odor, especially a fragrant one
53 off adj. Farther or more distant
54 offhand adv. Without preparation
55 officiate v. To act as an officer or leader
56 officious adj. Intermeddling with what is not one’s concern
57 offshoot n. Something that branches off from the parent stock
58 ogre n. A demon or monster that was supposed to devour human beings
59 ointment n. A fatty preparation with a butter-like consistency in which a medicinal substance exists
60 olfactory adj. of or pertaining to the sense of smell
61 olive-branch n. A branch of the olive-tree, as an emblem of peace
62 ominous adj. Portentous
63 omission n. Exclusion
64 omnipotence n. Unlimited and universal power
65 Omnipotent adj. Possessed of unlimited and universal power
66 omniscience n. Unlimited or infinite knowledge
67 omniscient adj. Characterized by unlimited or infinite knowledge
68 omnivorous adj. Eating or living upon food of all kinds indiscriminately
69 onerous adj. Burdensome or oppressive
70 onrush n. Onset
71 onset n. An assault, especially of troops, upon an enemy or fortification
72 onslaught n. A violent onset
73 onus n. A burden or responsibility
74 opalescence n. The property of combined refraction and reflection of light, resulting in smoky tints
75 opaque adj. Impervious to light
76 operate v. To put in action and supervise the working of
77 operative adj. Active
78 operator n. One who works with or controls some machine or scientific apparatus
79 operetta n. A humorous play in dialogue and music, of more than one act
80 opinion n. A conclusion or judgment held with confidence, but falling short of positive knowledge
81 opponent n. One who supports the opposite side in a debate, discussion, struggle, or sport
82 opportune adj. Especially fit as occurring, said, or done at the right moment
83 opportunist n. One who takes advantage of circumstances to gain his ends
84 opportunity n. Favorable or advantageous chance or opening
85 opposite adj. Radically different or contrary in action or movement
86 opprobrium n. The state of being scornfully reproached or accused of evil
87 optic n. Pertaining to the eye or vision
88 optician n. One who makes or deals in optical instruments or eye-glasses
89 optics n. The science that treats of light and vision, and all that is connected with sight
90 optimism n. The view that everything in nature and the history of mankind is ordered for the best
91 option n. The right, power, or liberty of choosing
92 optometry n. Measurement of the powers of vision
93 opulence n. Affluence
94 opulent adj. Wealthy
95 oral adj. Uttered through the mouth
96 orate v. To deliver an elaborate or formal public speech
97 oration n. An elaborate or formal public speech
98 orator n. One who delivers an elaborate or formal speech
99 oratorio n. A composition for solo voices, chorus, and orchestra, generally taken from the Scriptures
100 oratory n. The art of public speaking
101 ordeal n. Anything that severely tests courage, strength, patience, conscience, etc
102 ordinal n. That form of the numeral that shows the order of anything in a series, as first, second, third
103 ordination n. A consecration to the ministry
104 ordnance n. A general name for all kinds of weapons and their appliances used in war
105 orgies n. Wild or wanton revelry
106 origin n. The beginning of that which becomes or is made to be
107 original adj. Not copied nor produced by imitation
108 originate v. To cause or constitute the beginning or first stage of the existence of
109 ornate adj. Ornamented to a marked degree
110 orthodox adj. Holding the commonly accepted faith
111 orthodoxy n. Acceptance of the common faith
112 orthogonal adj. Having or determined by right angles
113 orthopedic adj. Relating to the correcting or preventing of deformity
114 orthopedist n. One who practices the correcting or preventing of deformity
115 oscillate v. To swing back and forth
116 osculate v. To kiss
117 ossify v. to convert into bone
118 ostentation n. A display dictated by vanity and intended to invite applause or flattery
119 ostracism n. Exclusion from intercourse or favor, as in society or politics
120 ostracize v. To exclude from public or private favor
121 ought v. To be under moral obligation to be or do
122 oust v. To eject
123 out-and-out adv. Genuinely
124 outbreak n. A sudden and violent breaking forth, as of something that has been pent up or restrained
125 outburst n. A violent issue, especially of passion in an individual
126 outcast n. One rejected and despised, especially socially
127 outcry n. A vehement or loud cry or clamor
128 outdo v. To surpass
129 outlandish adj. Of barbarous, uncouth, and unfamiliar aspect or action
130 outlast v. To last longer than
131 outlaw n. A habitual lawbreaker
132 outlive v. To continue to exist after
133 out-of-the-way adj. Remotely situated
134 outpost n. A detachment of troops stationed at a distance from the main body to guard against surprise
135 outrage n. A gross infringement of morality or decency
136 outrageous adj. Shocking in conduct
137 outreach v. To reach or go beyond
138 outride v. To ride faster than
139 outrigger n. A part built or arranged to project beyond a natural outline for support
140 outright adv. Entirely
141 outskirt n. A border region
142 outstretch v. To extend
143 outstrip v. To go beyond
144 outweigh v. To surpass in importance or excellence
145 overdo v. To overtax the strength of
146 overdose n. An excessive dose, usually so large a dose of a medicine that its effect is toxic
147 overeat v. To eat to excess
148 overhang n. A portion of a structure which projects or hangs over
149 overleap v. To leap beyond
150 overlord n. One who holds supremacy over another
151 overpass v. To pass across or over, as a river
152 overpay v. To pay or reward in excess
153 overpower v. To gain supremacy or victory over by superior power
154 overproduction n. Excessive production
155 overreach v. To stretch out too far
156 overrun v. To infest or ravage
157 oversee v. To superintend
158 overseer n. A supervisor
159 overshadow v. To cast into the shade or render insignificant by comparison
160 overstride v. To step beyond
161 overthrow v. To vanquish an established ruler or government
162 overtone n. A harmonic
163 overture n. An instrumental prelude to an opera, oratorio, or ballet
164 overweight n. Preponderance