from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a suspicious or critical look; scowl, leer
- v. to be suspicious or mistrustful of
- v. to look under something
- v. To miss because one is looking too low.
- v. to look intently at or into, scrutinize, inspect
- v. To not give due worth or respect to.
From Middle English underlōken ("to be suspicious of; look at with mistrust"), equivalent to under- + look. (Wiktionary)