noun
Refers to a man who is very particular about his appearance and follows the latest fashions, sometimes with a slightly affected or showy nuance. The word is somewhat dated but still understood.
彼はいつも洒落者で、スーツの仕立てにこだわっている。
He is always a dandy, particular about the tailoring of his suits.
あの洒落者は、毎週新しい帽子をかぶってくる。
That fop comes in wearing a new hat every week.
お洒落 is a more common and general term for stylishness or being fashion-conscious, used for both men and women. 洒落者 specifically refers to a man who is a dandy or fop.
Compound of 洒落 (share, 'stylishness, wittiness') and 者 (mono, 'person'). The exact historical derivation is uncertain, but the word has been used since the Edo period to describe a man of refined and fashionable taste.