Top definition
Initially means 'ok' or 'alright.' Also can be used on occasion to mean 'thanks,' 'you're welcome,' 'forget about it,' 'capiche,' etc.
John: Hey man, thanks for the help on that homework.

Mike: Yeah, ummk.
by Lime Tamalti February 02, 2011
Get the mug
Get a Ummk mug for your barber Jerry.