weak verb
Linguistics term referring to verbs that form past tense and past participle by adding a dental suffix (e.g., -ed in English), as opposed to strong verbs with vowel changes. Used in the context of Germanic language grammar.
English 'walk' is a weak verb, and its past tense is 'walked'.
Strong verb; forms past tense by vowel change (e.g., sing-sang-sung), contrasting with the regular dental suffix of weak verbs.
Compound of 弱 (weak) + 変化 (change, inflection) + 動詞 (verb), calque from German 'schwaches Verb' or English 'weak verb'.