say it: SEE-mee
seamy is an adjective meaning "showing a seam". It carries 2 recorded senses.
showing a seam
morally degraded
“a seedy district”
“the seamy side of life”
“sleazy characters hanging around casinos”
“sleazy storefronts with...dirt on the walls”
“the sordid details of his orgies stank under his very nostrils”
“the squalid atmosphere of intrigue and betrayal”
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 seamy 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.