moob

M3O1O1B3
/muːb/

noun

A plump or untoned breast on a man.

Similar
Opposite
Scrabble 8

Meanings

moob1

nounmoob (plural moobs)

plural moobs

  1. plural normallyslangA plump or untoned breast on a man.

    2001 September 3, miha ³, "Re: I know I shouldn't be doing this but...", in alt.games.video.nintendo.gamecube, Usenet, Yeah, put a shirt on gene, we don't want to see your fatty moobs.

    3 more examples

    Vince has Moobs (man boobs = moobs)

    1998 September 6, 6PANTERA, “Re: SUNDAY NIGHT HEAT: November 29, 1998, I'll be there...”, in t-netz.wrestling.wwf (Usenet), retrieved 12 Sep 2016, message-ID <6svsrp$dnp@chronicle.concentric.net>

    Often – I refer you in particular to Rod Stewart and Tony Blair – these moobs are strangely taut and unsaggy, and have that bee-stung, 12-year-old girl look.

    2007 January 6, The Guardian

    Ranged along the sides of the broad chamber were curtained booths containing day beds, and from time to time an overweight East End cabbie would emerge from one of these, his moobs glistening with sweat, [...]

    2009, Will Self, Ralph Steadman, Psycho too, page 242

    Synonyms: man boob

moob2

verbmoob (third-person singular simple present moobs, present participle moobing, simple past and past participle moobed)

present singular third person moobs · participle present moobing · participle past moobed · past moobed

  1. intransitiveslangboard gamesTo rapidly adjust the evaluation of a position towards zero, indicating a likely draw.

    The time taken for an engine to boom / moob can be quite a while because that time taken is completely dependent on the hardware you're running the program on.

    2020 November 27, Allure, “Big changes in engine's evaluation after considerable time”, in Stack Exchange, archived from the original on 22 May 2024
    2 more examples

    Stockfish was slightly moobing until Leela played Qf5. An innocuous looking move that immediately sent alarm bells ringing and Stockfishes^([sic]) evaluation just kept rising.

    2020 September 20, u/FMExperiment, “Stockfish beats Leela to inflict her first defeat in TCEC season 19 and remains the last undefeated engine!”, in Reddit, r/chess, archived from the original on 22 Oct 2022

    The reverse was also won uneventfully by LEELA although the fish emotes were numerous in the chat as STOCKFISH 'moobed' to a mere 0.40 evaluation after its 25th move!

    2021 May 26, Matthew Sadler, “The TCEC20 Computer Chess Superfinal: a Perspective”, in ICGA Journal, volume 43, number 1, →DOI, pages 74–87

    Antonyms: boom

nounmoob (plural moobs)

plural moobs

  1. slangboard gamesAn instance of moobing.

    The evaluation boom and moob continued as Stockfish headed for a queen-rook-knight vs queen-rook-knight position that looked pretty nasty to me!

    2022 April 22, Matthew Sadler, “TCEC Season 22 SuperFinal: Komodo Dragon vs Stockfish”, in TCEC, archived from the original on 13 Dec 2022
    2 more examples

    The latest Stockfish on my laptop finds mate in 22 in less than a minute. Do you have any examples where a boom (or moob) occurs after 2-3 minutes of evaluation?

    2020 November 27, the_fox, “Big changes in engine's evaluation after considerable time”, in Stack Exchange, archived from the original on 22 May 2024

    One notable exception to the missing lines being interesting: Sometimes on a moob the sudden insight is 'I'm going to hit the 50 move rule before realizing my advantage'.

    2021 January 23, Bram Cohen, “You're doing computer chess game commentary wrong”, in Medium, archived from the original on 06 Dec 2022

    Antonyms: boom

Synonyms & antonyms

nounA plump or untoned breast on a man.

Similar

verbTo rapidly adjust the evaluation of a position towards zero, indicating a likely draw.

Opposite

nounAn instance of moobing.

Opposite
Also see

Origin

moob · verb, noun

Inversion of boom (“to rapidly adjust the evaluation of a position away from zero, indicating a likely win or loss”).

Full word history & related roots →

Translations

French moob
  • moobmale breast
Polish męski cycek
  • męski cycekmale breast
Swedish chipstutte
  • chipstuttemale breast

Rhymes & wordplay

Rhymes with moob

All rhymes →

Anagrams

Cite this entry
APA

moob. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/moob

MLA

“moob.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/moob. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “moob,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/moob.

Source: moob on Wiktionary, CC BY-SA 4.0.