come of age
To reach a specific age where one is legally considered to be an adult.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“In many countries, you come of age at eighteen.”
“The young prince will officially come of age during a ceremony held on his eighteenth birthday.”
“As the protagonist begins to come of age, she must finally confront the difficult responsibilities that her family expects her to carry.”
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act one's age
To behave in a manner appropriate to one's age.
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act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
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age before beauty
A phrase said to allow older people to go before younger ones.
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appetite comes with eating
Starting an activity increases one's desire to continue it.
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as they come
As it is possible to be.
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blow to kingdom come
To totally destroy (something); to annihilate or wipe out (something).
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burn that bridge when one comes to it
To anticipate dealing with a problem or situation either by acting in a manner that alienates or cuts ties with others, or merely with the expectation of encountering trouble.
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Christmas come early
Something very delightful or fortunate that is happening or has happened, especially earlier than expected.
Last updated August 10, 2026