Oxford Dictionary
favourable
favourable |ˈfeɪv (ə )rəb (ə )l |(US favorable ) ▶adjective 1 expressing approval: the exhibitions received favourable reviews. • giving consent: their demands rarely received a favourable response. 2 to the advantage of someone or something: favourable conditions for vegetation growth | the settlement was favourable to the unions. • (of a wind ) blowing in the direction of travel. • suggesting a good outcome: a favourable prognosis. DERIVATIVES favourableness noun ORIGIN Middle English: via Old French from Latin favorabilis, from favor (see favour ).
Oxford Thesaurus
favourable
favourable adjective 1 a favourable assessment of his ability: approving, commendatory, commending, praising, complimentary, flattering, glowing, appreciative, enthusiastic; good, pleasing, agreeable, successful, positive; informal rave. ANTONYMS unfavourable; critical. 2 the birds nest where conditions are favourable: advantageous, beneficial, of benefit, in one's favour, on one's side, helpful, good, right, conducive, convenient, suitable, fit, fitting, appropriate; propitious, auspicious, hopeful, promising, fair, encouraging. ANTONYMS disadvantageous. 3 he hoped for a favourable reply to his request: positive, affirmative, assenting, agreeing, concurring, approving, in the affirmative; encouraging, reassuring, supportive, in one's favour. ANTONYMS negative.