Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z underappraisal An appraisal that undervalues something. underappraise To appraise at too low a value. underappreciate To not hold in sufficiently high esteem. underappreciated Not valued or appreciated as highly as one should be. underappreciation insufficient appreciation underappreciative Insufficiently appreciative; ungrateful. underapproximate To form an underapproximation of. underapproximation An approximation that is lower than the true value. underarc In a two-dimensional knot diagram, any arc which crosses under another segment of the knot. underarch To form an arch beneath. underargue To argue inadequately. underarm The armpit. underarousal Less than the normal extent of arousal underarrest To arrest at a disproportionately low rate. underarticulate To articulate insufficiently. underarticulated Inadequately articulated. underarticulation Deliberately leaving an utterance indistinct or unarticulated. underascertainment Insufficient ascertainment underassertive Insufficiently assertive. underassertively In an underassertive manner. underassertiveness A tendency toward being underassertive; social timidity. underassess To assess at too low a value. underassessment The assessment of a tax or charge at a lower value than the correct one. underassistant A secondary or lesser assistant. underassured Insufficiently assured. underattainment Less than the normal or desired attainment underattend To pay too little attention to. underattendance Attendance too infrequently, or by too few. underattended Attended by too few people. underattention Insufficient attention. underattenuation Insufficient attenuation underattribute To underestimate the role of some specified factors in causing (a particular outcome, action, or state of affairs). underattribution Insufficient or inadequate attribution. underaverage Below average. underawe To fail to inspire the intended degree of awe. underawed Insufficiently awestruck; unimpressed. underawing Failing to inspire the expected level of awe. underback A vessel that receives the wort as it flows from the mashing tub. underbailiff A subordinate bailiff. underbake To bake insufficiently, or less than usual. underbalanced Describing a method of drilling for petroleum in which the pressure in the wellbore is kept lower than that of the formation being drilled, thus allowing fluid to enter the well as soon as it is found. underballast To load with insufficient ballast. Underbank A locality in the Dungog council area, eastern New South Wales, Australia. underbanked Having inadequate access to financial services or formal banking facilities. underbar A bar placed under a symbol. underbark The inner layer of tree bark, beneath the overbark. underbarrel Mounted beneath the barrel of a firearm. underbarrier Beneath a barrier. underbeadle A subordinate beadle. underbeam A structural beam lying under something else. underbear To support, endure. underbearer One who helps to bear or carry the corpse or accessories at a funeral. underbearing An undersupport. underbeat To beat too little, or less than usual. underbed An underlying base that supports a bed or foundation. underbellied Having a specified kind of underbelly. underbelly The underside of an animal. underbet a bet which is smaller than standard for a given situation underbid To bid too low. underbidder The last person to drop out of an auction; the second-highest bidder. underbill To bill an inadequate amount. underbind To bind underneath. underbite A malocclusion in which the lower teeth extend past the upper ones underbitten Having had insufficient acid used in an etching process, so that the result is too shallow. underblame To blame insufficiently; to absolve. underblanket A blanket placed directly on the mattress of a bed. underblouse A blouse worn under another garment, such as a waistcoat or vest underblow To fail to blow with sufficient force or energy underboard A board that lies beneath something. underboated Having an inadequate boat. underbodice An undershirt for women, typically sleeveless and worn under a blouse or a dress's bodice. underbody The underparts of a bird or animal. underboil To boil insufficiently. underbone A small motorcycle built on a frame consisting mostly of one large-diameter tubular component. underboob The lower part of a woman's breast, especially when uncovered or revealed by clothing. underbook To fail to book enough of something; not to sell as much of something as is required. Underbool A town in the Rural City of Mildura, north western Victoria, Australia underboost To create too little pressure in an engine's combustion chamber. underboosted Suffering from underboost. underboss An assistant to the boss of a crime family underbottom The lowest part of the profile of a ship or submarine. underbound To provide a lower bound to. underbounded Having insufficient boundaries. underbrace To brace, fasten, or bind underneath. underbrag A confident statement involving openly acknowledging shortcomings, demonstrating indifference to others' opinions. underbrained Lacking intelligence. underbrake To brake (a vehicle) insufficiently. underbranch A lower branch. underbreak Rock remaining within a specific excavation perimeter that should have been thrown out by the blast. underbreath Under one's breath; inaudibly or in a barely audible manner. underbreathe To hypoventilate. underbred Of inferior breeding or upbringing; vulgar, lacking in manners or finesse. underbredness The state or condition of being underbred. underbreeches breeches worn underneath other clothing underbreed To breed insufficiently. underbreeding A lack of manners or sophistication. underbrew To brew for too short a time. underbrewer An apprentice brewer learning the brewing craft and trade from a chief brewer. underbridge A bridge that allows traffic to pass under a road, river, railway etc. underbright Not bright enough. underbrim The underside of a hat's brim. underbring To bring under subjection or control. underbrow The portion of the face below the eyebrow and above the eyelid. underbrush The small trees and other plants that clutter the floor of a forest. underbudget To budget a smaller amount that is needed. underbuild To build beneath another structure; provide a foundation or support for; undergird. underbuilder A subordinate or assistant builder. underbuilding A substructure; foundation; infrastructure. underbum The lower part of the buttocks, as revealed by certain clothing such as skimpy shorts. underburden To give too light a burden; to assign less than a fair share. underburdened Not having sufficient work. underburn To burn up. underbury To bury beneath; bury under. underbush Synonym of underbrush. underbust Below the bust. underbusy Insufficiently busy; not having enough to do. underbutler A subordinate or assistant butler. underbutt The lower part of the buttocks, especially as revealed by certain clothing such as skimpy shorts. underbuy To buy at less than the value of. undercabinet Beneath a cabinet. undercaffeinated Insufficiently caffeinated. undercalculate To calculate as being smaller than is actually the case. undercalculation Calculation producing too small a result. undercanopy That live under a canopy undercap Synonym of underscarf. undercapacity Less than capacity. undercapitaled Having insufficient capital. undercapitalised Insufficiently capitalised undercapitalization Insufficient capitalization undercapitalize To supply with insufficient capital undercapitalized Lacking sufficient capital undercaptain A subordinate captain. undercar The underside or undercarriage of a car. undercarboxylated Inadequately carboxylated. undercarboxylation The quality of being undercarboxylated. undercard A list of minor or supporting contests printed on the same bill as the main event (primarily fighting or racing, such as the main fight at a boxing match or wrestling, horse or car racing, etc.), occurring before or after the main event. undercarder A lower-ranking carder (person employed to card wool). undercarriage The supporting structural framework of a land vehicle (such as a car, truck, van, wagon, etc). undercarriaged Having an undercarriage. undercarriageless Without an undercarriage. undercart An aircraft's undercarriage. undercarter A subordinate carter. undercarve To carve insufficiently. undercast An unbroken or nearly unbroken cloud layer below the point of observation. undercause The underlying cause; root cause. undercautious Insufficiently cautious. undercelebrated Not having received as much fame as one deserves. undercellar A lower cellar. underchallenge To challenge to an insufficient degree. underchallenged Insufficiently challenged.