申し訳ない (もうしわけない)I'm sorry; (it's) inexcusable; I feel regretful

I'm sorry; (it's) inexcusable; I feel regretfulexpressions (phrases, clauses, etc.), adjective (keiyoushi)
thank you very much (for help, etc.)expressions (phrases, clauses, etc.), adjective (keiyoushi)

申し訳ない, its kanji, and other words that share them.Open this graph

Kanji in 申し訳ない

申請しんせいapplication; request
答申とうしんreport; reply
申し込みもうしこみapplication; entry
申告しんこくreport; return (e.g. tax)
申し入れもうしいれproposal; offer
申し立てもうしたてstatement; account (of something)
申し出もうしでproposal; request
上申じょうしんreport to a superior
翻訳ほんやくtranslation
内訳うちわけitemization (of expenses); the items
通訳つうやくinterpretation (i.e. oral translation)
言い訳いいわけexcuse
訳者やくしゃtranslator
申し訳もうしわけapology; excuse
英訳えいやくEnglish translation
訳わけconclusion from reasoning, judgement or calculation based on something read or heard; reason

See how 申し訳ない connects to the rest of Japanese.