Keep __, Don't Lose Your Temper
This page is the CodyCross answer for the clue below from Airport, Group 455, Puzzle 5 (Takeoff Distance).
Question is: Keep __, Don't Lose Your Temper
and the answer is: YOURCOOL
Word Meaning:
YOUR — Belonging to you; of you; related to you (singular; one owner).
Definitions from Wiktionary.