The story
- Proto-Indo-European · derived from*tewh₂-“to swell”
- Proto-Italic · derived from*tumēō
- Latin · derived fromtumor“swelling”
- Old French · derived fromtumour
- Middle English · inherited fromtumour
- English todaytumor
From Middle English tumour, from Old French tumour, from Latin tumor (“swelling”), from tumeō (“bulge, swell”, verb), from Proto-Italic *tumēō, from Proto-Indo-European *tewh₂- (“to swell”). Related to English thumb.
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.