such a one

pronoun

1

: one of this or that kind : one of a specified or understood kind

he knows who is a likely witch and takes such a one in hand by commonsense methods

—W. W. Howells

2

a

: one of a kind to be indicated or specified

such a one as may be found in any small town

b

: one of the same kind

just such a one as his father

3

archaic : someone not named

telling you then … that such a one and such a one were past cure

—Shakespeare

Word History

Etymology

Middle English such an on

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