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playing {with}
tampering {with}
fooling {with}
trifling {with}
Verb
to tamper [ tampered ; tampered ]
عبث {ب}
to abuse [ abused ; abused ]
to trifle [ trifled ; trifled ]
to screw up [ screwed up ; screwed up ]
to twiddle [ twiddled ; twiddled ]
to foozle [ foozled ; foozled ]
to piddle [ piddled ; piddled ]
Adjektive
vain [ vainer/more vain ; vainest/most vain ]