number-one

US /ˌnʌm.bɚ ˈwʌn/

UK /ˌnʌm.bɚ ˈwʌn/

1.

số một

yourself and no one else:

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Frank is completely selfish - he only cares about number one.

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number look out for number one one-on-one cardinal number ordinal number phone number license number