The term unfavorable refers to situations or circumstances that are disadvantageous, unfavorable or unhelpful. On the contrary, the antonyms for the word unfavorable include words that indicate positive, helpful, or beneficial situations. Some examples of antonyms for unfavorable are favorable, beneficial, advantageous, ideal, positive, good, pleasant, profitable, and rewarding. If you describe an event or situation as favorable, it means that it is something that is advantageous or helpful. Alternatively, if you use words such as positive or ideal, it expresses an action or situation in a favorable or satisfactory way. Conversely, if you label a situation as unfavorable, it means it is disadvantageous or inadequate.