1) (of) a statement expressing 'Yes', agreement etc or one that is true, real etc as in 'The answer is (in the) affirmative (affirmative)

2) a short statement expressing a general truth (usually from a known literary work) (aphorism)

3) expressing regret for doing wrong or not doing something (apologetic)

4) often expressing disagreement (argumentative)

5) (of a way of expressing an unpleasant opinion) honest and exact (candid)

6) the quality of expressing an unpleasant opinion honestly (candour)

7) expressing admiration, praise etc (complimentary)

8) put forward as dogmas; (of a person, statement) expressing opinions in an arrogant way (dogmatic)

9) a short saying expressing an idea in a clever and amusing way, e.g. 'To know you is to love you' (epigram)

10) to smile broadly so as to show the teeth, expressing amusement, satisfaction etc (grin)