'hyperhidrotic' is formed from the combining form 'hyper-' (from Greek) + 'hidro-'/'hidros' (Greek for 'sweat') with the adjectival suffix '-tic' (from Greek '-tikos'), meaning 'pertaining to excessive sweating.'

'hyperhidrotic' developed in modern medical English from 'hyperhidrosis' (medical Latin/Greek formation). 'Hyperhidrosis' itself comes from Greek elements 'hyper-' + 'hidrosis' (from Greek 'hidōr' meaning 'sweat'), and the adjectival form was later formed by replacing '-osis' with the suffix '-tic' to create 'hyperhidrotic.'

Originally constructed to denote the condition of 'excessive sweating' (hyperhidrosis), the adjective has retained this specific medical meaning: 'pertaining to or characterized by excessive sweating.'