Synonyms of 'eye something or someone up'
If you say that one person is ogling another, you disapprove of them continually staring at that person in a way that indicates a strong sexual interest.
She hung round ogling the men at the factory.
eye up (informal)
gawp at (British , slang)
give the once-over (informal)
make sheep's eyes at (informal)
give the glad eye (informal)
lech or letch after (informal)
Thesaurus for eye something or someone up from the Collins English Thesaurus