underbred

• under-bred

From under- +‎ bred.

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underbred (comparative more underbred, superlative most underbred)

1. Of inferior breeding or upbringing; vulgar, lacking in manners or finesse.
   • 1748, [Samuel Richardson], “Letter CDXXIII”, in Clarissa. Or, The History of a Young Lady: , volumes (please specify |volume=I to VII), London: S Richardson;  , →OCLC:

     The art of governing these under-bred varlets lies more in the dignity of looks than in words […] .

   • 1923, H. G. Wells, Men Like Gods:

     Himself, he felt the most underbred of all; he was afraid of these Utopians: snobbish and abject before them, he was like a mannerless earthy lout in a drawing-room, and he was bitterly ashamed of his own abjection.

2. (of animals) Not purebred; of an inferior strain.
   • 1902, Frank Sherman Peer, Cross country with horse and hound:

     I prefer both sire and dam to be well-bred, but a well-bred mare and an underbred horse will produce a faster animal than a thoroughbred horse and an underbred mare.

• (manners): uncouth, rude, impolite

• (antonym(s) of “breeding”): thoroughbred

underbred

1. simple past and past participle of underbreed