chick·a·dee 
(chĭkə-dē′)
(chĭkə-dē′)n.
Any of several small plump North American birds of the genus Poecile, having predominantly gray plumage and a dark crown.
[Imitative of its call.]
- under fire
- underflow
- underfoot
- underfund
- underfur
- undergarment
- undergird
- underglaze
- undergo
- undergrad
- undergraduate
- underground
- Underground Railroad
- undergrown
- undergrowth
- underhair
- underhand
- underhanded
- underhandedly
- underhandedness
- under hat
- underhung
- underinsurance
- underinsured
- under/in the circumstances