sniff out (someone/something)

to discover someone or something, usually only after a special effort.

Part of their job is to sniff out talented new writers.

The FBI knew they had a double agent in their midst, but it took years to sniff him out.

• lend a helping hand
• lend an ear
• lend an ear to
• lend an ear to someone
• lend an ear to something
• lend itself to
• lend itself to something
• lend someone a hand
• leopard can't change its spots.
• leopard doesn't change its spots.
• lesser of two evils
• less than
• less than something
• let alone
• let alone do something
• let be
• let bygones be bygones
• Let bygones be bygones.
• let down
• let fly
• let fly something
• let fly with
• let fly with something
• let go
• let go of