The story
- Proto-West Germanic · derived from*smolōn“to burn, glow, fume, smoulder”
- Middle English · derived fromsmolder“smoke, smoky vapour”
- Middle English · inherited fromsmolderen“to suffocate, stifle”
- English todaysmolder
From Middle English smolderen (“to suffocate, stifle”), from Middle English smolder (“smoke, smoky vapour”), ultimately from Proto-West Germanic *smolōn (“to burn, glow, fume, smoulder”). Related to Proto-West Germanic *smallijan (> English smell).
Etymology from Wiktionary, CC BY-SA 4.0.