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Related to armchair: armchair general

an armchair critic

One who speaks critically on topics one actually knows little to nothing about. My uncle is such an armchair critic about the classes I'm taking—the fact that he never went to college doesn't stop him from weighing in! Stop being an armchair critic and let me fix my car, since I actually know what I'm doing here!
See also: armchair, critic

an armchair traveler

One who speaks authoritatively about traveling despite not traveling often. Don't let him discourage you when he's just an armchair traveler who's never been out of the country!
See also: armchair, traveler

armchair general

One who speaks authoritatively on topics one actually knows little to nothing about. My uncle is such an armchair general about the classes I'm taking—the fact that he never went to college doesn't stop him from weighing in! Stop being an armchair general and let me fix my car, since I actually know what I'm doing here!
See also: armchair, general

armchair quarterback

colloquial Primarily heard in US.
1. A fan who criticizes a football team or player with an air of authority while watching a game on television, especially at home. A: "I'm telling you, if they just had Williams run a route through the center of the field, he'd be wide open for a pass!" B: "Ah, many thanks to the resident armchair quarterback." Now that his playing career is over, he's been reduced to an armchair quarterback just like every other loser in town.
2. By extension, a person who acts like they have all the answers to a problem, especially in hindsight, usually without having any experience in that area. Social media seems to have turned everyone into an armchair quarterback whenever political issues are discussed. Dad, you have no idea all the difficulties that led up to our company's collapse, so stop acting like an armchair quarterback.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

an armchair something

An armchair critic, fan, traveller, etc. is interested in a particular subject and may talk about it, but does not have any real experience of it. The last thing we need are words of wisdom from an armchair critic. This great book is ideal for both the travelling supporter and the armchair fan.
See also: armchair, something
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

an armchair critic

a person who knows about a subject only by reading or hearing about it and criticizes without active experience or first-hand knowledge.
The phrase armchair critic is first recorded in 1896 , but the concept was around at least a decade earlier: in 1886 Joseph Chamberlain sneered at opponents as ‘arm-chair politicians’. Another common variant is armchair traveller , meaning ‘someone who travels in their imagination only’.
See also: armchair, critic
Farlex Partner Idioms Dictionary © Farlex 2017

an armchair critic, traveller, etc.

a person who knows about a subject only from what they have heard or read and not from personal experience: He’s what you might call an ‘armchair traveller’, having never actually been outside Europe.
See also: armchair
Farlex Partner Idioms Dictionary © Farlex 2017

armchair general

A self-proclaimed military expert with little or no practical experience, who imposes his or her views on others. See also backseat driver; Monday-morning quarterback.
See also: armchair, general
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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References in periodicals archive ?
PS39.99, PERSONALISED GREY PATCHWORK BEAN BAG CHAIR: This comfy bean bag armchair can be personalised.
"The inefficient and awkward writing position that left-handed students must adopt in right-handed armchairs causes slower handwriting, placing them at a disadvantage on important timed examinations," Angara said.
The construction of CNTs is defined based on the chiral vector or angle by which the sheet is rolled into a cylinder, in three different configurations including chiral, zigzag, and armchair. In the case of ([theta] = 0[degrees]) or (m = 0) the zigzag CNT is constructed.
SCRIMP Sherlock chair in Stirling Red PS399 from Next, THIS classic armchair is available in many different guises but we love the Stirling fabric in red, as it feels fabulously traditional yet modern.
Case in point--"Armchair Thriller", originally aired in the United States as part of the PBS 'Mystery!' television series.
London, Feb 26 (ANI): A small brown leather armchair once owned by Yves Saint Laurent has become the most expensive piece of 20th-century design to ever be auctioned.
In Division Two FC Armchair v Pensby Hotel changed venues in order to get the game played.
This 'Cube' armchair is an elegant expression of solidity and simplicity.
Your other lawn chairs will cower in shame when the clover armchair by Driade in weatherproof white polyethylene hits your back yard.
To suppress the ideal, heterodox clerics (and their apologists in the academy and media) engage in one, and usually several, of the following: evasion, ad hominems, pseudo-apologies, emotionalism, tendentious sloganeering, misplaced concreteness, and armchair psychoanalysis.
DEPORTIVO meet Valencia tonight in a game which some bloke on Sky said would keep armchair football fans happy.
Three wonderful new armchair readers are highly recommended picks.
Her explorations of the Inside Passage and adventures with loggers, lightkeepers, fishermen, missionaries and other residents recounted in Bijaboji: North To Alaska By Oar creates an astounding adventure story armchair readers won't want to miss.
Haus Publishing, which was set up in 2002 to publish the 'Life & Times' series of short modern biographies, is to extend its range with the launch of its 'Armchair Traveller' series.