Meaning & use

significant

adjective·Academic

Last updated

UK/sɪɡˈnɪfɪkənt/
US/sɪɡˈnɪfɪkənt/

Meanings

  1. adjectivecomparable

    Large or important enough to be noticed or to have a real effect.

    Grammar: Comparable: more significant. Often used before a noun, such as a significant change.

    Patterns

    • significant for someone
    • significant to someone
    • a significant amount of something

    The new bridge made a significant difference to commuters.

    A significant number of students passed the exam.

    Her promotion was a significant moment in her career.

  2. adjectivecomparable

    Carrying a hidden or special meaning, often expressed without words.

    Grammar: Often describes looks, silences and gestures: a significant glance.

    Patterns

    • a significant look
    • a significant pause

    She gave him a significant look across the table.

    There was a significant pause before he answered.

    He raised a significant eyebrow when the price was mentioned.

  3. adjectivenot comparabletechnical

    In statistics, unlikely to have happened by chance, according to a chosen test.

    Grammar: Used in the phrase statistically significant; it does not mean the effect is large.

    Patterns

    • statistically significant
    • significant at the five percent level

    The difference between the groups was statistically significant.

    A significant result does not prove the drug is useful.

    The study found no significant link between the two.

Common combinations

significant difference
There is a significant difference between the two prices.
significant increase
The town saw a significant increase in visitors.
statistically significant
The results were statistically significant.
significant role
She played a significant role in the project.
significant other
Bring your significant other to the party.
significant amount
A significant amount of rain fell overnight.

Synonyms and how they differ

important
Important is more general and common, while significant often suggests a measurable or noticeable effect.
considerable
Considerable stresses a large size or amount, not importance.
notable
Notable stresses being worth noticing or remembering, even if the effect is small.
meaningful
Meaningful suggests personal or emotional value, rather than size or effect.

Opposites

Word family

significance noun
the quality of being important or meaningful
significantly adverb
to a large or noticeable degree
signify verb
to mean or indicate something
insignificant adjective
too small or unimportant to matter

Commonly confused: significant or significant? significant or significance?

significant vs significant

Do not confuse it with signify, which is a verb meaning to indicate.

significant vs significance

Significance is the noun for importance, while significant is the adjective.

Practice

The scientist warned that a statistically significant result is not always ___.

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