Crossword puzzle clue "hold back as one's enthusiasm"

Hold back, as one's enthusiasm

Coach who said "If you aren't fired with enthusiasm, you will be fired with enthusiasm"

"If you aren't fired with enthusiasm, you will be fired with enthusiasm" speaker

"Push 'em back! Push 'em back! Way back!"?

Instrument often used in a flashback...back...back...back... *camera pans up everything goes blurry

Back-to-back-to-back championships

Didn't hold back one's curiosity

2012 Kelly Clarkson song with the lyric "No one can hold me back": 3 wds.