Answer: closesin

AnswerCrossword Clue
CLOSESIN

Gets nearer

CLOSESIN

Forms an increasingly smaller circle around, with "on"

CLOSESIN

Approaches one's objective

CLOSESIN
Nears one's target
CLOSESIN
Approaches
CLOSESINSurrounds.
CLOSESINEnvelops.
CLOSESINConverges (on)
CLOSESINNears, with "on"
CLOSESINPrepares to pounce