a conception or belief about something, an impulse or desire, especially one of a whimsical kind

take leave of one's senses/notions, notion that, notion of grandeur

preconceived notion, notion of time, whimsical notion

Formal and Informal Expressions of notion

In different contexts, you can replace 'notion' with suitable alternatives. In a more formal setting, 'concept, belief' is apt. In informal speech or writing, 'idea, hunch' is a commonplace synonym.

notion: Explore its Definition & Usage

notion Definition

1a conception or belief about something
2an impulse or desire, especially one of a whimsical kind

Using notion: Examples

Take a moment to familiarize yourself with how "notion" can be used in various situations through the following examples!

Example
I have a notion that she is lying.
Example
He has no notion of what he wants to do with his life.
Example
The notion of traveling the world excites me.
Example
I had a sudden notion to go for a swim.

notion Synonyms and Antonyms

Synonyms for notion

Antonyms for notion

Idioms Using notion

take leave of one's senses/notions
to become irrational or crazy
Example
He took leave of his senses when he decided to quit his job without a backup plan.
notion that
the belief or idea that
Example
The notion that money can buy happiness is a common misconception.
notion of grandeur
an unrealistic sense of superiority or importance
Example
His notion of grandeur made it difficult for him to connect with others.

Phrases with notion

preconceived notion
an opinion formed beforehand without adequate evidence
Example
She went into the interview with preconceived notions about the company and its culture.
notion of time
an individual's understanding or perception of the passage of time
Example
His notion of time was distorted after spending months in isolation.
whimsical notion
a sudden or fanciful idea that is not based on reason or reality
Example
She had a whimsical notion to quit her job and become a street artist.

Origins of notion

from Latin 'notio', meaning 'idea'

📌

Summary: notion in Brief

The term 'notion' [ˈnoʊʃən] refers to a belief or idea about something, or an impulse or desire, often of a whimsical nature. It can be used in phrases like 'preconceived notion' and 'notion of time,' and idioms like 'take leave of one's senses/notions,' indicating irrationality, and 'notion of grandeur,' denoting an unrealistic sense of superiority.