piggyback - definition and synonyms

verb [intransitive/transitive] informal 

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/ˈpɪɡiˌbæk/
present tense
I/you/we/theypiggyback
he/she/itpiggybacks
present participlepiggybacking
past tensepiggybacked
past participlepiggybacked
  1. if one thing piggybacks on another, it uses it, is based on it, or takes advantage of it
    piggyback (sth) on sth:

    A nonsecured network could lead to a lot more than a neighbour piggybacking on your Wi-Fi for free.

    piggyback (sth) off sth:

    This test is being piggybacked off another national survey.