brainsick

C2+ Topic:Describing Qualities

US /ˈbreɪnsɪk/ UK /ˈbreɪnsɪk/ See IPA manual

Meanings

1

adj
mentally disordered; mad or deranged

The brainsick prince raved alone in his tower.

Thesaurus

Synonyms

1 adj · mentally disordered; mad or... mad deranged insane dementedcrazedunhinged lunatic

Opposites

sane sound lucid rational

Word family

Derived forms brainsickness

Related forms brain sick

Etymology

A compound of brain + sick, from Old English brægenseoc ('mad'), literally 'sick in the brain'. Brain is from Old English brægen; sick from Old English seoc.

brægen Old English seoc Old English

View etymology graph ->

Topics

Describing Qualities

External links

# brainsick

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** /ˈbreɪnsɪk/
**IPA (UK):** /ˈbreɪnsɪk/

## Meanings
1. mentally disordered; mad or deranged

## Examples
- The brainsick prince raved alone in his tower.

## Synonyms
- mad
- deranged
- insane
- demented
- crazed
- unhinged
- lunatic

## Antonyms
- sane
- sound
- lucid
- rational

## Derived Forms
- brainsickness

## Related Forms
- brain
- sick

## Roots and Affixes
- Root: brægen
- Root: seoc

## Etymology
A compound of brain + sick, from Old English brægenseoc ('mad'), literally 'sick in the brain'. Brain is from Old English brægen; sick from Old English seoc.

## AI Etymology
Brainsick is a compound of brain + sick, from Old English brægenseoc ('mad'), literally 'sick in the brain'. Brain is from Old English brægen; sick from Old English seoc. The historical trail runs through brægen in Old English and seoc in Old English. Morphologically, brainsick is transparent: it is a compound of brain + sick, from Old English brægenseoc ('mad'), literally 'sick in the brain'. Used as an adjective, brainsick now means "mentally disordered; mad or deranged", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in derived forms such as brainsickness and related forms such as brain and sick. The modern word remains analyzable through its parts, which makes the semantic connection unusually direct.

## Topics
- Describing Qualities

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