mitchin' Share definition Flag mitchin' = skiving or 'playing truant' from work or school i have heard it used in Cardiff, Wales Teacher : 'Where is Matt today?' Pupil : 'Ah Miss, he's mitchin'!' Class sniggers mitchin' by Square radishes April 25, 2006 0 0 Get merch Get the mitchin' mug. Buy Now — $32.95 See more merch