そろそろ失礼しなくてはなりません。

そろそろ失礼しなくてはなりません。

I'm afraid I have to go now.

そろそろ失礼(しつれい)しなくてはなりません。

Sorosoro shitsureishinakute wanarimasen.

そろそろ (そろそろ、そろっと)

slowly; quietly; steadily; gradually; gingerly; soon; momentarily; before long; any time now

失礼 (しつれい、しつらい、しちらい)

discourtesy; impoliteness; Excuse me; Goodbye; to leave; to be rude

ば (ば)

if ... then; when; and; why don't you...?; the more (one does something); because; since

Readings: シツ、うしな.う、う.せる

Meanings: lose, error, fault, disadvantage, loss

Readings: レイ、ライ

Meanings: salute, bow, ceremony, thanks, remuneration