snuck

To creep or go stealthily; to come or go while trying to avoid detection, as a person who does not wish to be seen.

“He decided to sneak into the kitchen for a second cookie while his mom was on the phone.”

To take something stealthily without permission.

“I went to sneak a chocolate but my dad caught me.”

(ditransitive) To stealthily bring someone something.

“She asked me to sneak her a phone next month.”

To hide, especially in a mean or cowardly manner.

(with on) To inform an authority of another's misdemeanours.

“If you sneak on me I'll bash you!”