Answer: onthesly

AnswerCrossword Clue
ONTHESLY

Surreptitiously

ONTHESLY

Furtively

ONTHESLY

Secretly

ONTHESLY
To avoid publicity
ONTHESLY
In secret
ONTHESLYBehind one's back
ONTHESLYSneakily
ONTHESLYWith stealth
ONTHESLYSub rosa