bob - definition and synonyms

verb [intransitive] 

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present tense
present participlebobbing
past tensebobbed
past participlebobbed
  1. 1
    to move up and down with short regular movements, especially on water that is rising and falling
    bob up and down:

    The little boat bobbed up and down on the waves.

  2. 2
    British to curtsy
     Synonyms and related words

phrasal verbs