Idiom That Sounds Like a Waist Is Getting Smaller

This page is the CodyCross answer for the clue below from Larger than Life, Group 2154, Puzzle 5 (Panama Canal).

Question is: Idiom That Sounds Like a Waist Is Getting Smaller

and the answer is: WASTEAWAY

Word Meaning:

WASTE AWAY — (idiomatic) To lose energy or become weak and feeble.

Definitions from Wiktionary.