Losing All Sense of Calm; Being Extremely Worried

This page is the CodyCross answer for the clue below from Welcome to Japan, Group 577, Puzzle 3 (Sing Karaoke).

Question is: Losing All Sense of Calm; Being Extremely Worried

and the answer is: PANICKING

Word Meaning:

PANICKING — present participle and gerund of panic

Definitions from Wiktionary.