affirmative

(noun) a reply of affirmation. Example: "He answered in the affirmative."

(adj) affirming or giving assent. Synonyms: affirmative (vs. negative), affirmatory. Examples: "An affirmative decision." "Affirmative votes."

(adj) expecting the best. Synonyms: optimistic. Example: "An affirmative outlook."

(adj) expressing or manifesting praise or approval. Synonyms: approving, approbative, approbatory, plausive. Examples: "Approbative criticism." "An affirmative nod."