indefinite
/ɪnˈdɛfɪnɪt/ noun C2- A word or phrase that designates an unspecified or unidentified person or thing or group of persons or things.
Plural indefinites
From the library
“But that expression of ‘violently in love’ is so hackneyed, so doubtful, so indefinite, that it gives me very little idea.
“If matters came to a crisis I should endeavour to be present in person; but you can understand that, with my extensive consulting practice and with the constant appeals which reach me from many quarters, it is impossible for me to be absent from London for an indefinite time.
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