Synonyms and Antonyms for check-in

3. in (adv.)

to or toward the inside of

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4. check (v.)

make an examination or investigation

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7. check (n.)

an appraisal of the state of affairs

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8. check-in (n.)

the act of reporting your presence (as at an airport or a hotel)

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9. check (n.)

the bill in a restaurant

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10. in (n.)

a unit of length equal to one twelfth of a foot

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