moulder

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++moul·der British English, molder American English /ˈməʊldə $ ˈmoʊldər/ (also moulder away) verb [intransitive]  DECAYto decay gradually 腐烂，腐朽 old papers mouldering away in the attic 阁楼里慢慢霉烂的旧报纸→ See Verb table

Examples from the Corpus

moulder• I couldn't permit some one of your abilities to moulder away in a backwater.• Is there a warehouse somewhere filled with mouldering copies of Titanic?• Not only were they made to look lifeless and tormented, but they were crammed into mouldering fancy dress costumes.• Man, beast or daemon, Drachenfels lies mouldering in a filthy sepulchre.

moul·der verbChineseSyllable  

Corpus gradually to decay

moulder
moul‧der British English, molder American English /ˈməʊldə $ ˈmoʊldər/ (also moulder away) verb [intransitive]
to decay gradually:
    old papers mouldering away in the attic

mould·er (US mol·der) BrE /ˈməʊldə(r)/ 🔊NAmE /ˈmoʊldər/ 🔊 verbpresent simple - I / you / we / they moulder BrE /ˈməʊldə(r)/ 🔊 NAmE /ˈmoʊldər/ 🔊present simple - he / she / it moulders BrE /ˈməʊldəz/ 🔊 NAmE /ˈmoʊldərz/ 🔊past simple mouldered BrE /ˈməʊldəd/ 🔊 NAmE /ˈmoʊldərd/ 🔊past participle mouldered BrE /ˈməʊldəd/ 🔊 NAmE /ˈmoʊldərd/ 🔊 -ing form mouldering BrE /ˈməʊldərɪŋ/ 🔊 NAmE /ˈmoʊldərɪŋ/ 🔊 [intransitive] to decay slowly and steadily 腐烂；腐朽◆The room smelt of disuse and mouldering books. 房间里有一股长期不用和书籍发霉的味道。🔊🔊