Synonyms for Seedy:

adj.

disreputable (adjective)
sleazy.
mean (adjective)
down-at-heel.
run-down, dilapidated (adjective)
ratty, Decaying, shabby, bedraggled, threadbare, sleazy, decrepit, tacky, worn, mangy, scruffy, squalid, dingy, faded, tattered.
scrubby (adjective)
all the worse for wear.
shredded (adjective)
tattered.

n.

improper, tacky, rundown, illegal, shabby, dingy, shady, decrepit, scrubby, shoddy, fraudulent, illicit, tattered, bedraggled, mangy, down-at-heel, better, tatty, clandestine, unauthorized, all the worse for wear, dilapidated, unconstitutional, unlawful, ratty, Decaying, faded, broken-down, wrongful, threadbare. seedy (noun)
enfeebled, worn, scruffy, debilitated, squalid, sleazy, seamy, disreputable, sordid, unhealthy, seeded, infirm.

Other synonyms:

shabby. tattered. decrepit, shoddy, dilapidated. rundown. ragged
threadbare.
Other relevant words:
improper, tacky, rundown, illegal, shabby, dingy, shady, decrepit, scrubby, shoddy, fraudulent, illicit, tattered, bedraggled, mangy, down-at-heel, better, tatty, clandestine, unauthorized, all the worse for wear, dilapidated, unconstitutional, unlawful, ratty, Decaying, faded, broken-down, wrongful, threadbare.

Usage examples for seedy

  1. Then all the Accomackians went pleasantly home, my boy, except one seedy chap who had stood patiently before the platform during all the proceedings; and there he still stood, with his arms folded, when all the rest had gone. – The Orpheus C. Kerr Papers. Series 3 by Robert H. Newell