stim /stɪm/noun 5verb 1forms 3 noun5 •(informal) Sensory stimulation. •Any repetitive self-stimulatory behavior (e.g. hand flapping, head banging, repeating noises or words), frequent in autistic people. •Any drug that stimulates a woman's ovaries to produce eggs. •(slang) Synonym of stimulant (“drug”). •(Ireland, rare) A whit or jot; the least amount.That boy hasn't a stim of common sense. verb1 •To perform such a repetitive self-stimulatory action.Autistic people often stim with the help of technologies such as music and stim toys or tools to mediate between inner worlds and outer environments that may over/underwhelm us. — 2021 formsstimmed · stimming · stims