espy

Origin

From Middle English aspien, espien (“to make covert observations of (a person or place) with hostile intent, to spy on; to seek to discover by spying; to act as a spy; to catch sight of, see; to look over, observe; to wait in ambush, to ambush; to plot against; to look for, seek to find; to inquire or look into, investigate; to discover, find”) [and other forms], from Old French espier (“to watch”) (modern French épier (“to keep an eye on, watch; to spy on; (dated) to watch for”)), from Vulgar Latin *spiāre, from Frankish *spehōn (“to look, peer; to spy”), from Proto-Germanic *spehōną (“to look, peer; to spy”), from Proto-Indo-European *speḱ- (“to look, observe, see”). Doublet of spy.