Skip to main content
Glite Dictionary
brainish

brainish

1 9.9
Acting quickly without thinking
  • adjective
  • /ˈbreɪnɪʃ/
translation icon : impulsivo
  • The team's brainish tactics during the game led to a surprising loss.

Examples

  • She made a brainish choice by quitting her job without having another one lined up.

  • We replaced the sign on top of the thermometer because there are some who covet the brainish bodies of the elderly.

    Fiction book (1994)

  • His brainish decision to invest all his savings in a single stock cost him dearly.

Synonyms

impulsive
vsbrainish
78 4.4

Acting suddenly without careful thought because of a strong feeling

focuses on haste rather than being driven by sudden feeling
impetuous
vsbrainish
14 8.0

To act quickly without thinking about the results

is the same meaning expressed as a word meaning rash behaviour
hotheaded
vsbrainish
  • Informal
7 6.2

Quick to become angry and act without thinking

describes rash action without implying anger as the cause
madcap
vsbrainish
  • Informal
4 7.7

Acting quickly without thinking and often doing risky things

emphasizes rash haste rather than wild or unpredictable acts
heady
vsbrainish
1 7.9

Not caring about danger or bad results

describes hasty action rather than deliberate risk taking for defiance
tearaway
vsbrainish
  • UK
1 9.0

Acting quickly and without thinking in a wild way

is hasty but not as extreme or wild in behaviour

Antonyms

thoughtful
165 2.1

Caring about other people's needs and feelings

deliberate
125 4.1

Done on purpose after careful thought

How Impulsive

foolhardy
16 7.4
reckless
193 3.6
brainish
1 9.9
rash
3 4.3
impetuous
14 8.0

Surface Forms

brainish positive

Morphology

brainish = brain (opaque) = brain + ish

Although formally 'brain' + '-ish' is visible, the attested meaning 'rash, impetuous' is not a predictable result of 'brain' + '-ish'.

Etymology

Brainish comes from brain ('mind' or 'head') plus the ending -ish ('like'), so a helpful way to remember it is 'head-first' — doing something quickly and without careful thought. That's why brainish means acting impulsively or rashly.