Espy
/ɪˈspaɪ/
Definition 1 of 1
Pro Tip 1/3Literary Usage
Espy is often found in books, poems, or stories rather than spoken language. 
In the novel, the detective espied a clue hidden beneath the rug.
Pro Tip 2/3Observation Skill
Espy implies a keen ability to notice things that are not obvious. 
She espied a rare bird perched quietly in the dense foliage.
Pro Tip 3/3Slightly Archaic
Espy can sound old-fashioned, so use it to create a historical or formal tone. 
He espied his love from across the grand ballroom.