of little value or account; small; trifling

a picayune amount.

petty, carping, or prejudiced

I didn't want to seem picayune by criticizing.

(formerly, in Louisiana, Florida, etc.) a coin equal to half a Spanish real.

any small coin, as a five-cent piece.

Informal . an insignificant person or thing.

adjective

diminutive , everyday , frivolous , immaterial , incidental , inconsequential , inconsiderable , insignificant , irrelevant , little , meager , mean , meaningless , minor , minute , negligible , nonessential , of no account , paltry , petty , piddling * , puny , slight , small , superficial , trifling , trite , unimportant , niggling , nugatory , piddling , small-minded , measly , small-time , trivial