tomfool
1 of 2noun
tom·fool ˈtäm-ˈfül 
: a great fool : blockhead
tomfool
2 of 2adjective
: extremely foolish, stupid, or doltish
Synonyms
Adjective
- absurd
- asinine
- balmy
- brainless
- bubbleheaded
- cockeyed
- crackpot
- crazy
- cuckoo
- daffy
- daft
- dippy
- dotty
- fatuous
- featherheaded
- fool
- foolish
- half-baked
- half-witted
- harebrained
- inept
- insane
- jerky
- kooky
- kookie
- loony
- looney
- lunatic
- lunkheaded
- mad
- nonsensical
- nutty
- preposterous
- sappy
- screwball
- senseless
- silly
- simpleminded
- stupid
- unwise
- wacky
- whacky
- weak-minded
- witless
- zany
See all Synonyms & Antonyms 
Example Sentences
Adjective what kind of tomfool idea is this?
Word History
Etymology
Noun
earlier Tom foole, from Tom, shortened form of Thomas, a proper name + foole fool entry 1
Note: The word was perhaps originally an appellation for a jester. The account rolls of Durham Abbey record disbursements made for a certain Thome Fole (also in Latin as Thomas Fatuus), presumably the name of a professional jester, for items of dress in the 1330's and for his funeral during the period 1356-57 (see Oxford English Dictionary, first edition, and Middle English Dictionary s.v. Tomme).
Adjective
from attributive use of tomfool entry 1
First Known Use
Noun
1640, in the meaning defined above
Adjective
1760, in the meaning defined above
tomfool
adjective
as in foolish
showing or marked by a lack of good sense or judgment what kind of tomfool idea is this? Synonyms & Similar Words
Relevance
- foolish
- stupid
- silly
- absurd
- mad
- crazy
- lunatic
- idiotic
- insane
- fool
- daft
- dumb
- fatuous
- nonsensical
- irrational
- loony
- witless
- zany
- ridiculous
- dippy
- idiotical
- simpleminded
- simple
- wacky
- screwball
- cuckoo
- looney
- senseless
- weak
- nutty
- daffy
- dotty
- asinine
- inept
- kooky
- unwise
- whacky
- unreasoning
- imbecile
- moronic
- unreasonable
- doltish
- sappy
- lunkheaded
- crackpot
- slow
- preposterous
- out to lunch
- dunderheaded
- harebrained
- jerky
- bubbleheaded
- thickheaded
- half-witted
- brainless
- kookie
- thoughtless
- oafish
- unreasoned
- obtuse
- feebleminded
- half-baked
- weak-minded
- chuckleheaded
- surd
- clueless
- dopey
- fallacious
- vacuous
- balmy
- cockeyed
- featherheaded
- lamebrain
- dull
- pinheaded
- ludicrous
- dorky
- illogical
- softheaded
- gormless
- dim
- farcical
- unintelligent
- mindless
- knuckleheaded
- imbecilic
- thick
- empty-headed
- clownish
- dim-witted
- invalid
- dense
- laughable
- unsound
- buffoonish
- nonrational
- airheaded
- opaque
- soft
- lamebrained
- dopy
- notional
- brain-dead
- chowderheaded
- slow-witted
- boobish
- unconsidered
- birdbrained
- ill-advised
Antonyms & Near Antonyms
- wise
- sagacious
- sensible
- prudent
- clever
- sound
- sage
- sane
- sapient
- reasonable
- judicious
- bright
- smart
- rational
- intelligent
- logical
- brainy
- valid
- well-advised