Mustard has a sharp or keen taste. "Keen as mustard" means being sharp-minded.
As keen as mustard or as keen as a kitten
Food
"Keen" can mean either sharp or eager.
Mean Mr. Mustard was created on 1969-09-26.
The word "keen" rhymes with mean and can also mean to scream loudly or shout enthusiastically.
mustard gas
sheen, lean, mean, bean, green, jean, keen, ween
blob
keen sight
Keen, Mean, Gleen
Keen can have several meaning depending on its place in language, is can mean 'sharp and having a fine cutting edge', or highly developed, or eager or zealous, it can mean sever or acute (as in a keen or acute sense of hearing), it can also mean closely contested or strong. Also 'to be keen on' can mean to have a strong affection for.
It's "Peachy Keen" and it means you are ok Example: Person 1: "Are you feeling ok?" Person 2: "Peachy Keen.."