Answer: sneakin

AnswerCrossword Clue
SNEAKIN

Add surreptitiously

SNEAKIN

Insert subtly

SNEAKIN

Enter stealthily

SNEAKIN
Get past the guards, perhaps
SNEAKIN
Enter surreptitiously
SNEAKINCrash the party
SNEAKINGet by the ticket taker
SNEAKINEnter on the sly
SNEAKINQuietly crash the gate: 2 wds.
SNEAKINGain entrance without admission.
SNEAKINEntered uninvited.
SNEAKINElude the doorman
SNEAKINBeat the admission fee
SNEAKINEnter like a burglar
SNEAKINEnter secretly
SNEAKINBeat the security system, say
SNEAKINEnter through the back door, say