1. Of inferior breeding or manners.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• unerred,
• ynderbred,
• hnderbred,
• jnderbred,
• 8nderbred,
• 7nderbred,
• underbeed,
• underbrd,
• underivedd,
• undeirved,
• underived,
• undeecreed,
• undecred,
• underber,
• underbord,
• underboad,
• underbaord,
• underboadr,
• underbrac,
• undercrep

• unmodernised,
• underbody,
• undermanned,
• unmodernized,
• undercoated,
• undersea,
• underhanded,
• underived,
• underwear,
• understood,
• underseal,
• underage,
• underdressed,
• underfed,
• underexpose,
• Underdahl,
• underworld,
• underwater,
• undertide,
• underfur,
• undoer,
• underhand,
• undergarment,
• understate,
• underlie,
• understudy,
• undercover,
• untier,
• undercurrent,
• unadorned,
• underwood,
• underfelt,
• underside,
• underscore,
• underdog,
• undertaker,
• untired,
• unaddressed,
• underspend,
• underbelly,
• understaffed,
• undertone,
• under wraps,
• undersized,
• underrate,
• underframe,
• undersurface,
• undergo,
• unweathered,
• underseller,
• undershrub,
• underclothed,
• underspent,
• underdress,
• underbodice,
• undersealed,
• underbrush,
• underquote,
• understand,
• under fire,
• underline,
• underwrite,
• underneath,
• under arms,
• undersell,
• underbid,
• underboss,
• unuttered,
• undervalue,
• underdone,
• undergird,
• undersexed,
• underprice,
• underdown,
• underweight,
• undergrad,
• undermine,
• understated,
• undertake,
• underpart,
• undersize,
• unmoderated.

The adjective form of the word "underbred" is "underbred" itself.

The plural form of "underbred" is "underbreds".

The singular form of the word "underbred" is "underbred". It is an adjective that describes someone or something as lacking refinement or breeding.