たゆまぬ努力が成功の鍵であることは言うまでもない。

Sentence Analyzer

English Translation

It goes without saying that diligence is the key to success.

Furigana

たゆまぬ努力(どりょく)が成功(せいこう)の鍵(かぎ)であることは言(い)うまでもない。

Romanji

Tayumanu doryoku ga seikō no kagi de aru koto wa iumademonai.

Words

弛む (たるむ、たゆむ)

to slacken; to loosen; to relax; to droop (e.g. loose or flabby skin); to sag (ceiling); to slack off (e.g. one's work, attention); to not put one's heart in

努力 (どりょく)

great effort; exertion; endeavour; endeavor; effort

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

成功 (せいこう)

success; hit

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

鍵 (かぎ、カギ)

key; lock

だ (だ)

be; is; indicates past or completed action; indicates light imperative

或 (ある)

a certain ...; some ...

事 (こと、こん)

thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

言うまでもない (いうまでもない、ゆうまでもない)

it goes without saying; there is no need to say so, but of course; it is needless to say; it need scarcely be said