ETYM Latin absurdus harsh-sounding; ab + (prob) a derivative from a root svar to sound; not connected with surd: cf. French absurde. Related to Syringe.
1. Inconsistent with reason or logic or common sense; SYN. incongruous, unreasonable.
2. So devoid of wisdom or good sense as to be laughable; SYN. derisory, ludicrous, nonsensical, preposterous, ridiculous.

ETYM Latin asininus, from asinus ass. Related to Ass.
Complacently or inanely foolish; SYN. fatuous, inane, mindless, vacuous.
Of or pertaining to asses; stupid.
Pertaining to the ass; stupid fatuous.

Devoid of good sense or judgment.

ETYM Latin ridiculosus, ridiculus, from ridere to laigh. Related to Risible.
1. Fitted to excite ridicule; absurd and laughable; unworthy of serious consideration.
2. Involving or expressing ridicule.

ETYM Latin stupidus, from stupere to be stupefied: cf. French stupide.
Lacking or marked by lack of intellectual acuity.

Vacuously or complacently and unconsciously foolish; SYN. inanely.

Without good sense or judgment; SYN. unwisely.

ETYM Latin absurditas: cf. French absurdite.
1. A ludicrous folly; SYN. fatuity, fatuousness, silliness.
2. A message whose content is at variance with reason; SYN. absurdness, ridiculousness.

ETYM Latin ineptitudo.
1. The quality of being inept; unfitness; inaptitude; unsuitableness.
2. Absurdity; nonsense; foolishness.

The quality or state of being silly.

ETYM Latin stupiditas: cf. French stupidité.
1. A poor ability to understand or to profit from experience.
2. A stupid mistake; SYN. betise, folly, foolishness, imbecility.