a.
1.
Particular, peculiar, individual, special, specific.
2.
Fit, fitting, befitting, suitable, appropriate, meet, seemly, convenient, adapted, becoming, right, legitimate.
3.
Exact, accurate, precise, correct, just, formal.
4.
Real, actual, ~ly so called.
5.
Decent, respectable.
6.
Own, belonging to.
7.
Natural, original.