tetched adjective2 •(US, informal) Touched: mildly deranged, somewhat mentally dysfunctional."His mind was as keen as a razor, an' as straight-edged, 'xcept jest on one subject. On that he was, so to say, a little—wal—a little tetched." — 1889 •(US, informal) Touched: physically contacted, impacted, or handled."They ain't bin tetched or handled by any one but the Kempany's agents." — 1899 formsmore tetched · most tetched