espy
Synonym discussion
Sense: verb/1
'Espy' is a formal, literary word for suddenly seeing someone or something, often at a distance. 'Spot' is the closest everyday equivalent and is far more common in conversation. 'Glimpse' stresses the brevity or incompleteness of the sight — you might glimpse a face in a passing car, whereas you could espy someone by looking carefully. 'Catch sight of' is a neutral phrase used in both speech and writing without the literary tone of espy. 'Spy' (as a verb for seeing) can imply watching secretly or with intent. For example: 'He spotted his friend at the station' (natural and neutral); 'He glimpsed a figure in the shadows' (quick, partial); 'He caught sight of a red car' (neutral). None except espy carry its distinctly formal, narrative quality.
Common collocations
Etymology
'Espy' entered English in the 1200s from Old French 'espier', meaning 'to watch' or 'to observe'. The French word came from a Frankish (Germanic) root *spehon, 'to look out' — the same root that gave English 'spy'. The word has kept its literary, slightly old-fashioned character for centuries.