foundation (noun) foundation: basis for something physical or mental
Sinonime: absurdity, craziness, daftness, dottiness, dumb thing to do, dumb trick, fatuity, foolishness, idiocy, imbecility, impracticality, imprudence, inadvisability, inanity,
indiscretion, irrationality, lunacy,
madness, obliquity, preposterousness, rashness, recklessness, senselessness,
silliness,
stupidity, triviality, unsoundness,
vice, witlessness
Antonime: judgment,
knowledge,
seriousness,
understanding,
wisdom