The clue is "AM" and a big U and "ous", so the answer is Ambiguous.
Ambiguous
A mous
Foot
?
Bou
Ddf
Famous
mosquito
Backwards
Big Brained (or smart)
bvy
Turkey in the straw
Pea pod.
Double or nothing
Big Brained (or smart)
It mean "clever after thought"
Seasons
"Open sesame."
Scre yu