(idiomatic) To take up an issue with another person's boss or other superior rather than beginning or continuing to deal with the original person. / (idiomatic) To escape someone's comprehension.

Alternative form of headfirst

Alternative form of headfirst

With the head first or foremost.

plural of head-up display

(idiomatic) To act with pride; to be proud in a positive way.

Wise; knowing; skilful.

miliaria

plural of change of heart

Alternative form of like a chicken with its head cut off