Translation guide
Describes something created or done for a specific purpose or situation, without prior planning or general applicability.
To describe something created or done on the spot for a specific need, without prior preparation.
To describe a committee, rule, or solution created for a particular issue, not intended to be permanent or universal.
Means 'temporary' or 'extraordinary'. Commonly used for committees, meetings, or measures.
臨時の委員会が設置された。
An ad hoc committee was established.
To describe doing something without prior planning, on the spot.
Literally 'on the spot'. The most natural way to say 'ad hoc' as an adverb.
問題はその場で解決した。
We solved the problem ad hoc.
The English phrase 'ad hoc' is often used in formal or technical contexts. In Japanese, there is no single equivalent; choose based on whether you mean 'temporary', 'improvised', or 'for a specific purpose'. Using アドホック is possible in IT contexts but sounds like jargon.
Means 'impromptu' or 'makeshift'. Often used for things quickly put together, like a speech or a meal.
即席のスピーチを頼まれた。
I was asked to give an ad hoc speech.
Literally 'only for that place/situation'. Emphasizes the temporary, one-off nature.
その場限りの解決策ではだめだ。
An ad hoc solution won't do.
A stopgap or makeshift thing. Suggests something used temporarily because the proper thing isn't available.
間に合わせの道具で修理した。
I repaired it with ad hoc tools.
For the time being; temporary. Often used in financial contexts (e.g., 'ad hoc loan').
当座の資金を調達した。
We raised ad hoc funds.
Specially set up for a purpose. Often used for websites, courses, or teams.
特設サイトで情報を公開した。
We released information on an ad hoc website.
Dedicated or exclusive. Can imply 'ad hoc' when something is made for a single purpose.
このツールは専用に開発された。
This tool was developed ad hoc.
Improvised, especially for performances or creative acts.
彼は即興で歌を作った。
He made up a song ad hoc.
Haphazardly, without a plan. Has a slightly negative nuance of being unorganized.
行き当たりばったりで旅行した。
We traveled ad hoc.