推測は

as for the guess

→ 推測
phrase Rare #23,809
as for the guess 推測 means “guess” or “speculation,” and は marks it as the topic. The phrase often introduces an evaluation of someone’s guess, such as whether it was correct or mistaken.
JA: 彼の推測は正しかった。
EN: His guess was correct.

彼女の推測は当たった

Her guess was right.

そのような推測ははっきり言って無駄だ

Frankly speaking, such speculation is pointless.

— オッペンハイマー (2023)

彼の推測は結局正しいことが判明した

His guess turned out to be correct after all.

私の最初の推測は見当違いであった

My initial guess was off the mark.

私の推測は十中八九当たっていた

My guess was right nine times out of ten.

私の最初の推測ははずれた

My first guess was wrong.