undermine C1 Topic:Clothing & Appearance US /ˌʌn.dɚˈmaɪn/ UK /ˌʌn.dəˈmaɪn/ See IPA manual Freq #14284 Meanings 1 verb To gradually weaken or damage something. Constant criticism began to undermine her confidence. 2 verb To wear away the base or foundation of something. The flood waters undermined the railway embankment. Thesaurus Synonyms 1 verb · to gradually weaken or... undercutcorrode ↔ Opposites undergird Word family Forms underminedunderminesundermining Etymology From under- + mine. Topics Clothing & Appearance External links Cambridge Dictionary Wiktionary Google Images # undermine **Type:** Word **Level:** C1 **Part of speech:** verb **IPA (US):** /ˌʌn.dɚˈmaɪn/ **IPA (UK):** /ˌʌn.dəˈmaɪn/ **Frequency rank:** 14284 ## Meanings 1. To gradually weaken or damage something. 2. To wear away the base or foundation of something. ## Examples - Constant criticism began to undermine her confidence. - The flood waters undermined the railway embankment. ## Antonyms - undergird ## Roots and Affixes - Affix: under- - below ## Etymology From under- + mine. ## Topics - Clothing & Appearance markdown