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tinker

verb [I usually + adv/prep]
 
 
/ˈtɪŋ.kər/ US  /-kɚ/

Definition

to make small changes to something, especially in an attempt to repair or improve it: He spends every weekend tinkering (about) with his car. I wish the government would stop tinkering with the health service. → Compare fiddle verbCorrecting and mendingEditing and compiling
(Definition of tinker verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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