"I'll handle that!"

ONIT

Think of a casual two-word phrase you might say when taking charge of a task—it’s often texted without spaces.

The phrase "I'll handle that!" is often shortened in casual speech to "I'm on it," which sounds like "ON IT" when spoken quickly. The answer drops the "I'm" and keeps the remaining part, giving you "ONIT." This is a common crossword trick where a longer phrase gets condensed into a tighter, more puzzle-friendly form.