返事が遅れてすいません。

返事が遅れてすいません。

I'm sorry for the delay in responding.

返事(へんじ)が遅(おく)れてすいません。

Henji ga okurete suimasen.

返事 (へんじ)

reply; answer; response

が (が)

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

遅れる (おくれる)

to be late; to be delayed; to fall behind schedule; to be overdue

すいません (すいません、すんません)

sorry; excuse me; thank you

Readings: ヘン、かえ.す、 -かえ.す、かえ.る、 -かえ.る

Meanings: return, answer, fade, repay

Readings: ジ、ズ、こと、つか.う、つか.える

Meanings: matter, thing, fact, business, reason, possibly

Readings: チ、おく.れる、おく.らす、おそ.い

Meanings: slow, late, back, later