この話題はよそう。

この話題はよそう。

Let's get off the subject.

この話題(わだい)はよそう。

Kono wadai wa yosou.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

話題 (わだい)

topic; subject

は (は)

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

止す (よす)

to cease; to desist; to cut it out; to lay off (an activity); to drop (a subject) to abolish; to resign; to give up

Readings: ワ、はな.す、はなし

Meanings: tale, talk

Reading: ダイ

Meanings: topic, subject