importantrule

noun

UK /ɪmˈpɔːtənt ruːl/

US /ɪmˈpɔːrtənt ruːl/

A rule is something you must follow, and important means it really matters.

Wearing a helmet is an important rule when you ride a bike.

SYNONYMS

key rule essential rule major rule vital rule critical rule

RELATED WORDS

safety guideline instruction law responsibility

OTHER MEANINGS

2. A rule that keeps everyone safe and fair.

No running near the pool is an important rule.

3. A rule that must be followed at school or home.

Raising your hand is an important rule in class.

4. A rule that helps things work well.

Taking turns is an important rule in games.