🤪 Legally insane 📄 Can be certified

certifiable

10 7.6

Mentally ill enough to be sent to a hospital for treatment

adjective
/ˈsɜrtɪfaɪəbl/

Offensive

: demente

The detective concluded that the suspect was certifiable after hearing his bizarre stories.
certifiable lunatic

Examples

Miller may be certifiable, and I'm not talking as a candidate for office.

Blog text (26)
You are certifiable.

#Roxy (2018)
But he was already certifiable.

The Tomb (2009)
I had a girlfriend, but she was certifiable.

#Lucky Number (2015)
You must think I'm really certifiable.

Mrs. Ashboro's Cat (2003)
She must think I'm certifiable.

Blog text (26)
This boy is certifiable.

Ambulance (2022)
That man is certifiable.

Creature (1985)
You're 100% certifiable.

Ted Bundy (2002)
"You appear sane, you sound sane at times, but you're certifiable," she said and smiled.

Fiction book (1995)

Antonyms

normal

∞ 1.0

Usual or expected in most situations

sane

119 3.2

Having a healthy mind and able to think clearly

How Mentally Ill

certifiable

Offensive

10 7.6

psychotic

Specialized

167 8.4

mentally ill

Vulgar

77 3.4

unstable

91 4.4

distressed

35 2.9

Surface Forms

certifiable positive

Morphology

certifiable = certify (semi-transparent) = certify + able

The adjective originates from a legal/medical sense 'able to be certified (for commitment)'; modern informal use meaning 'insane' involves a semantic shift and is not fully predictable from the components for average learners.

Etymology

Certifiable can also mean 'mentally ill' or 'crazy' in a casual way because doctors once gave a certificate saying someone was unwell and could be sent to a hospital. A helpful way to remember this is to think of that paper: if someone could get the certificate, people called them certifiable, which is why the word can now be used to say someone is 'crazy'.