What is the crossword answer for the clue: Keep it under your hat

HEAD - a 4 letter word may be the answer you are looking for!

PATE - a 4 letter word may be the answer you are looking for!

SCALP - a 5 letter word may be the answer you are looking for!

MUMSTHEWORD - a 11 letter word may be the answer you are looking for!

TOPSECRET - a 9 letter word may be the answer you are looking for!

Keep it under your hat

4 Character Answers:

HEAD

PATE

5 Character Answers:

SCALP

9 Character Answers:

TOPSECRET

11 Character Answers:

MUMSTHEWORD