sneak up - definition and synonyms

phrasal verb [intransitive]
present tense
I/you/we/theysneak up
he/she/itsneaks up
present participlesneaking up
past tensesneaked up or snuck up
past participlesneaked up or snuck up
  1. to get very near someone before they notice you
    sneak up on:

    Don’t sneak up on me like that!

    1. a.
      if something sneaks up on you, it happens when you are not expecting it
See also main entry: sneak