Synonyms of outright in English:

outright


See US English definition of outright

See UK English definition of outright

See Spanish definition of rotundo

adverb

1‘he rejected the proposal outright’

SYNONYMS
completely, entirely, wholly, fully, totally, categorically, absolutely, altogether, utterly, flatly, in every respect, unreservedly, without reservation, without exception, thoroughly, quite
informal totes
ANTONYMS

in part, partially

2‘I can't bring myself to tell her outright’

SYNONYMS
explicitly, straightforwardly, directly, forthrightly, openly, frankly, candidly, honestly, truly, sincerely, bluntly, plainly, in plain language, unreservedly, without constraint, truthfully, without dissembling, to someone's face, straight from the shoulder, without beating about the bush, with no holds barred, man to man, woman to woman
informal on the level
British informal straight up

3‘the passengers were killed outright’

SYNONYMS
instantly, instantaneously, immediately, at once, straight away, there and then, then and there, on the spot

4‘houses could be paid off gradually, but paintings had to be bought outright’

SYNONYMS
all at once, at one fell swoop, in one fell swoop, in one go

adjective

1‘it was an outright lie’

SYNONYMS
out-and-out, absolute, complete, utter, downright, sheer, stark, thorough, thoroughgoing, categorical, unequivocal, undeniable, unqualified, unmodified, unrestricted, unmitigated, unconditional, positive, simple, wholesale, all-out, rank, consummate, pure
archaic arrant

2‘the outright winner’

SYNONYMS
definite, unequivocal, clear, unqualified, incontestable, undeniable, unmistakable, categorical, straightforward