o'clock
— Adverb
– English
～ according to the clock; "it's three o'clock in Tokyo now"
o'er
— Adverb
– English
～ throughout a period of time; "stay over the weekend"
O.K.
— Adverb
– English
～ in a satisfactory or adequate manner; "she'll do okay on her own"; "held up all right under pressure"; (`alright' is a nonstandard variant of `all right')
obdurately
— Adverb
– English
～ in a stubborn unregenerate manner; "she remained stubbornly in the same position"
obediently
— Adverb
– English
～ in an obedient manner; "obediently she slipped off her right shoe and stocking"
objectionably
— Adverb
– English
～ in an obnoxious manner; "he said so in one of his more offensively intellectually arrogant sentences"
objectively
— Adverb
– English
～ with objectivity; "we must look at the facts objectively"
obligatorily
— Adverb
– English
～ in a manner that cannot be evaded; "the ministry considers that contributions to such a fund should be met from voluntary donations rather than from rates compulsorily levied."
obligatorily
— Adverb
– English
～ in an obligatory manner; "this rule applies obligatorily"
obligingly
— Adverb
– English
～ in accommodation; "obligingly, he lowered his voice"
obliquely
— Adverb
– English
～ to, toward or at one side; "darting eyes looking sidelong out of a wizened face"
obliquely
— Adverb
– English
～ at an oblique angle; "the sun shone aslant into his face"
obnoxiously
— Adverb
– English
～ in an obnoxious manner; "he said so in one of his more offensively intellectually arrogant sentences"
obscenely
— Adverb
– English
～ to an obscene degree; "this man is obscenely rich"
obscenely
— Adverb
– English
～ in a lewd and obscene manner; "he had seen how in their dances the white men and women held one another obscenely"
obscurely
— Adverb
– English
～ in an obscure manner; "this work is obscurely written"
obsequiously
— Adverb
– English
～ in an obsequious manner; "she acts obsequiously toward her boss"
observably
— Adverb
– English
～ in a noticeable manner; "he changed noticeably over the years"
observantly
— Adverb
– English
～ in an observant manner
observingly
— Adverb
– English
～ in an observant manner