Open English Wordnet
Adjectives
(a)unambiguoushaving or exhibiting a single clearly defined meaning“As a horror, apartheid … is absolutely unambiguous” (Mario Vargas Llosa)
(a)unequivocal, univocal, unambiguousadmitting of no doubt or misunderstanding; having only one meaning or interpretation and leading to only one conclusion“unequivocal evidence”, “took an unequivocal position”, “an unequivocal success”, “an unequivocal promise”, “an unequivocal (or univocal) statement”