Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
reply-paid is an adjective meaning "with cost of reply prepaid by sender". It carries one recorded sense.
Definitions, synonyms and semantic relations for reply-paid come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.