それは彼らの側での間違いだった。
Sentence Analyzer
English Translation
It was a mistake on their part.
Furigana
それは彼 らの側 での間違 いだった。
Romanji
Sore wa karera no gawa de no machigai datta.
Words
其れ
(それ)
that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
彼ら
(かれら)
they (usually male); them
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
側
(がわ、かわ)
side (of something, or taking someone's side); part; (watch) case
で
(で、にて)
indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.
間違い
(まちがい)
mistake; error; blunder; accident; mishap; trouble; improper conduct (e.g. between man and woman); indiscretion
だ
(だ)
be; is; indicates past or completed action; indicates light imperative