- lacking ordinary quickness and keenness of mind; dull.
- characterized by or proceeding from mental dullness; foolish; senseless: a stupid question.
- tediously dull, especially due to lack of meaning or sense; inane; pointless: a stupid party.
- annoying or irritating; troublesome: Turn off that stupid radio.
- in a state of stupor; stupefied: stupid from fatigue.
- Slang. excellent; terrific.
- Informal. a stupid person.
Origin of stupid
- lacking in common sense, perception, or normal intelligence
- (usually postpositive) stunned, dazed, or stupefiedstupid from lack of sleep
- having dull mental responses; slow-witted
- trivial, silly, or frivolous
- informal a stupid person
Word Origin and History for stupider
1540s, "mentally slow," from Middle French stupide, from Latin stupidus "amazed, confounded," literally "struck senseless," from stupere "be stunned, amazed, confounded," from PIE *(s)tupe- "hit," from root *(s)teu- (see steep (adj.)).
Native words for this idea include negative compounds with words for "wise" (cf. Old English unwis, unsnotor, ungleaw), also dol (see dull), and dysig (see dizzy). Stupid retained its association with stupor and its overtones of "stunned by surprise, grief, etc." into mid-18c. The difference between stupid and the less opprobrious foolish roughly parallels that of German töricht vs. dumm but does not exist in most European languages.