sidetrack - definition and synonyms

verb [transitive] 

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/ˈsaɪdˌtræk/
present tense
I/you/we/theysidetrack
he/she/itsidetracks
present participlesidetracking
past tensesidetracked
past participlesidetracked
  1. to delay the progress of something by causing people to waste time on something else that is unimportant
    get sidetracked:

    It’s easy to get sidetracked by the design details.