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be compos mentis

To be sane or mentally competent. "Compos mentis" is Latin for "of sound mind." I doubt that Travis was compos mentis when he committed that crime.
See also: compo, mentis

non compos (mentis)

Not sane or mentally competent. The phrase is Latin for "not of sound mind." Based on the orders he's been giving lately, many believe him to be non compos. The judge ruled that she had been non compos mentis at the time, and thus could not be held legally liable.
See also: compo, non

non compos poopoo

slang Extremely drunk. A faux Latinism probably modeled on the real Latin phrase "non compos mentis," meaning not sane or mentally competent. There's no way I'm letting you drive home when you're this non compos poopoo.
See also: compo, non, poopoo
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

be ˌcompos ˈmentis

(from Latin, formal or humorous) having full control of your mind: Are you sure she was fully compos mentis when she said that?
See also: compo, mentis
Farlex Partner Idioms Dictionary © Farlex 2017

non compos

(ˈnɑn ˈkɑmpos)
1. mod. out of one’s mind; non compos mentis. She is strictly non compos!
2. and non compos poopoo mod. alcohol intoxicated. That gal isn’t just drunk. She’s non compos poopoo.
See also: compo, non

non compos poopoo

See also: compo, non, poopoo
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.

non compos

Crazy; mentally incapacitated and therefore unable to be responsible for one’s speech or actions. This term is an abbreviation of the Latin non compos mentis, literally translated as “not master of one’s mind,” or “not of sound mind.” It dates from the seventeenth century and today is loosely used for irrational behavior, as well as surviving in legal terminology.
See also: compo, non
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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References in periodicals archive ?
Although she came across as a battle-axe, her character Nora had a heart of gold and was secretly quite flattered by Compo's unwavering attention.
COMPO 2 had the highest amount of fluoride release on the 3rd day as compared to the other set of glasses followed by a decrease of the release at a later time point.
After Bill's death in 1999, Tom joined the drama as Compo's long-lost son.
And Compo? Well, plans to erect his statue in Holmfirth, the Pennine town where Summer Wine is set, are stalled by precisely the sort of problem I expect to see here in Cardiff.
Meanwhile, the new Step Compo features ''a compact, lightweight, stylish design and foldable construction that allows easy storage and transport.''
TAYLOR, Texas-Intercraft, the $370 million-plus photo frame behemoth, acquired Pedrosa, manufacturer of compo pasta frame products, on Oct.
If you book a flight to or from an EU country - and some others - or use an EU airline, you can get compo for delays over three hours.
But the antics of young-at-heart OAPs, Clegg, Compo and Foggy (Peter Sallis, Bill Owen and Brian Wilde, above), proved a hit with viewers, and at its peak Last of The Summer Wine had more than 18 million viewers in stitches.
CRUEL Owen Collins burned a girl's hand on a radiator because she told him he looked like scruffy TV character Compo.
13 October 2011 - German fertiliser producer K+S (ETR:SDF) is to wrap up the divestment of its garden fertiliser division Compo to buyout firm TritonA next Monday, local daily Financial Times Deutschland (FTD) said today, quoting an internal statement of the vendor.
Nora's attempts to fend off amorous advances from scruffy layabout Compo - often with a broom - were a Last of the Summer Wine staple.
Tom Owen - son of Bill Owen who played Compo in the BBC series - will be staging a one-man show at Solihull Arts Complex.
Or maybe they are just after the compo? The whole situation is a mess the Government should have sorted out well before the election.
THE grey Compo has a bit of a following on both sides of the Irish Sea, having won over hurdles at Sedgefield and Naas already this winter, and he looked all set to land a handicap chase at Naas yesterday, creeping into contention and jumping past front-runner Giolla An Bhaird at the last fence.