1550s, "one who engages in mental speculation," from Latin speculator "a looker-out, spy, scout, explorer; investigator, examiner," agent noun from speculari (see speculation). The financial sense is from 1778. Formerly also "observer, onlooker," especially "an occult seer" (1650s). Fem. form speculatrix attested from 1610s. Related: Speculatory.
例文
1. By his own admission,he evaded taxes as a Florida real-estate speculator .
フロリダで不動産投機ビジネスをしていたときに税金を逃れたことを自ら認めた。
2.He was a sinister and crafty speculator .
彼は危険な投機家だ。
3.The stake was large，and Harkness was a daring speculator .
賭けは小さくないが、ハックニスは大胆な投機家である。
-ヘドレーブルグを破壊する
4.'so the river-boat gambler and the speculator is going to be respectable！
"これで.あの川を渡る船を操る賭博師と投機家は紳士になる！
5. Mrs. Elsing hated to take his money --' speculator money " - but the Association needed money badly.