ad hoc

They said they carried out an "urgent preliminary investigation" on Sunday which suggested the door policy had been changed "ad hoc".

Rather than an ad hoc workaround, pen and paper systems could be something staff practise using from time to time so that they can switch away from their computers seamlessly if required.

Most members of the ad hoc Assembly Petroleum and Gasoline Supply Committee were noncommittal on the storage issue.

“Those investments have often been made in a very ad hoc manner.”

Investigative reporter Seymour Hersh related that Straussians filled the Pentagon’s ad hoc Office of Special Plans, and had bulldozed the government’s intelligence agencies in order to cherry-pick dubious evidence to fit their preconceived notions.