1. To rate too low; to undervalue.

2. A price less than the value.

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

• undergrade,
• underated,
• undereath,
• undergrate,
• underatke,
• underate,
• underratted,
• indercate,
• undurate,
• underrage,
• undereate,
• undererate,
• underrater,
• uderrate,
• unerrate,
• undrerate,
• undurrate,
• underweite,
• camerrate,
• funeerate

• understated,
• underwriter,
• undercover,
• undercut,
• undergo,
• undergrad,
• underfelt,
• unweathered,
• under fire,
• undertone,
• undertaking,
• underarm,
• underwear,
• underfoot,
• unadorned,
• underage,
• underwater,
• underspent,
• underside,
• undercoat,
• underworld,
• underexpose,
• under it,
• under arms,
• underprice,
• undercoated,
• underactive,
• underframe,
• understate,
• undersea,
• undersurface,
• underlie,
• underskirt,
• underpart,
• undergird,
• underrating,
• understood,
• underived,
• untier,
• underbelly,
• undoer,
• underweight,
• undercurrent,
• undersize,
• undertake,
• untermeyer,
• undershrub,
• underact,
• undertaker,
• understock,
• understudy,
• underdone,
• undershirt,
• underdress,
• underwrite,
• underfur,
• understand,
• underplay,
• underfed,
• underivative,
• undersell,
• under that,
• undermine,
• unmoderated,
• undercharge,
• underscore,
• unmodernised,
• undershoot,
• underdrawers,
• underseal,
• undervalue,
• underneath,
• undershot,
• undersealed,
• under way,
• understaffed,
• underachieve,
• underseller,
• undergarment,
• under wraps,
• unmodernized,
• undertide,
• undertow,
• underspend,
• undersized,
• undersexed,
• underline,
• underquote,
• underbred,
• underclass.

The adverb form of the word "underrate" is "underratedly".

The adjective form of the word "underrate" is "underrated".

The plural form of the word "underrate" is "underrates".

The singular form of the word "underrate" is "underrates".