v. trifle, dabble, meddle, mess (around or about), toy, fool or play (around or about), Brit potter or US putter (about or around), Colloq fiddle or monkey or muck (about or around) Graham has always enjoyed tinkering with engines
TINKER
Meaning of TINKER in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012