Know best
verb phrase
To understand or be very familiar with something or someone.
As her closest friend, I know her best.
verb phrase
Believe that one's opinion or decision is the right or best one.
Don't argue with mom, she knows best.
Often appears as...
- mother knows best
- father knows best
Usage tips
Approving
Colloquial
verb phrase
To have superior knowledge or understanding about something, usually induced by experience.
In matters relating to the wilderness, the park ranger knows best.
Often appears as...
- expert knows best
- doctor knows best
verb phrase
To understand or be very familiar with something or someone.
As her closest friend, I know her best.
verb phrase
Believe that one's opinion or decision is the right or best one.
Don't argue with mom, she knows best.
Often appears as...
- mother knows best
- father knows best
Usage tips
Approving
Colloquial
verb phrase
To have superior knowledge or understanding about something, usually induced by experience.
In matters relating to the wilderness, the park ranger knows best.
Often appears as...
- expert knows best
- doctor knows best
Definition 1 of 3
Pro Tip 1/1Close Relationships
Used when someone has a deep understanding of another person or topic, often due to a close relationship.
Tim knows Jenny best; he predicts her reactions perfectly.
Pro Tip 1/1Close Relationships
Used when someone has a deep understanding of another person or topic, often due to a close relationship.
Tim knows Jenny best; he predicts her reactions perfectly.
Pro Tip 1/1Close Relationships
Used when someone has a deep understanding of another person or topic, often due to a close relationship.
Tim knows Jenny best; he predicts her reactions perfectly.
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