say it: thuhmd
thumbed is an adjective meaning "(of pages) worn or soiled by thumb and fingers by frequent handling or turning". It carries one recorded sense.
(of pages) worn or soiled by thumb and fingers by frequent handling or turning
“well-thumbed pages of the dictionary”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for thumbed come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.