baseborn, adj. 1. lowborn, lowbred, vulgar, common; low, lowly, simple, humble, homely, homespun; plebian, proletarian, bourgeois; untitled, ungenteel, ungentle, unlanded; beggarly, poor, pauperish.
2. illegitimate, bastard, bastardly, base; misbegotten, adulterine, natural, unfathered, spurious.
3. contemptible, mean-spirited, currish. See - base2 (def. 1).
baseless, adj. 1. groundless, ungrounded, unfounded, unsubstantial, unsubstantiated, uncorroborated; unsound, erroneous, illogical, unreasonable, unreal, unjustifiable.
2. foundationless, bottomless; unsupported, freestanding.
basement, n. cellar, cellarage, wine cellar, storage room, Naut. hold.
baseness, n. 1. vileness, meanness, lowness, viciousness, badness; sordidness, ignobility, foulness, sinisterness, darkness, black-heartedness; balefulness, dreadfulness, direness, direfulness, grimness; malice, maleficence, invidiousness; wickedness, iniquity, nefariousness, flagitiousness, heinousness; sinfulness, ungodliness, profanity, blasphemy; abomination, outrage, enormity, flagrancy, atrocity; damnableness, fiendishness, hellishness, devilishness; criminality, feloniousness, lawlessness; perfidy, treachery, recreancy, traitorousness, disloyalty, treason; villainy, knavery, roguery, miscreancy, rascality.
2. depravity, turpitude, degradation, depravation, debauchery; profligacy, reprobacy, reprobateness, degeneracy, dissipation; dissolution, immorality, obliquity, unchastity; wantonness, salaciousness, salacity, prurience; carnality, bestiality, perversity.
3. offensiveness, objectionableness, obnoxiousness, disagreeableness; repulsiveness, repugnance, repel-lence, distastefulness; loathsomeness, odiousness, odium, hatefulness, despicability, despicableness, detestability; contemptibility, insufferableness, scurviness; opprobrium, ignominy, disgrace, obloquy; infamy, notoriety, disrepute, disreputableness; shamefulness, contemptuousness, discreditability.