Dreye權威釋義|forthwith

ad.

立即，馬上，毫不猶豫地
The doctor came forthwith.
醫生立即來了。
I said good night and left forthwith.
我道了晚安後馬上走了。

同義:

ad.立即，馬上；迅速地

以上來源於：《英漢大辭典》

/fɔːθˈwɪθ, -ð/

adv.

without delay.

ME (in the sense ‘at the same time’): partly from earlier forthwithal, partly representing forth with used alone.

以上來源於：《簡明牛津英語詞典》

以上來源於：《英漢法律詞典》