The story
- Latin · borrowed fromspeculātor“spy, explorer, investigator”
- English todayspeculator
From Latin speculātor (“spy, explorer, investigator”), from speculor (“to watch, to observe”) + -tor (“-er: forming agent nouns”), from specula (“watchtower”), from speciō (“to watch, to observe”), q.v. In some senses, an agent noun formed within English from speculate. Doublet of spectator.
Etymology from Wiktionary, CC BY-SA 4.0.