STUPIDLY
stupidly, doltishly
(adverb) in a stupid manner; “he had stupidly bought a one way ticket”
Source: WordNet® 3.1
Etymology
Adverb
stupidly (comparative more stupidly, superlative most stupidly)
In a stupid manner.
Synonyms
• carelessly
• foolishly
• irresponsibly
Source: Wiktionary
STUPID
Stu"pid, a. Etym: [L. stupidus, fr. stupere to be stupefied: cf. F.
stupide.]
1. Very dull; insensible; senseless; wanting in understanding; heavy;
sluggish; in a state of stupor; -- said of persons.
O that men . . . should be so stupid grown . . . As to forsake the
living God! Milton.
With wild surprise, A moment stupid, motionless he stood. Thomson.
2. Resulting from, or evincing, stupidity; formed without skill or
genius; dull; heavy; -- said of things.
Observe what loads of stupid rhymes Oppress us in corrupted times.
Swift.
Syn.
– Simple; insensible; sluggish; senseless; doltish; sottish; dull;
heavy; clodpated.
– Stu"pid*ly, adv.
– Stu"pid*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition