By herself

Also found in: Idioms.
alone; apart; unaccompanied.

See also: Herself

References in classic literature ?
there in the presence of that Helene it had all seemed clear and simple; but now, alone by herself, it was incomprehensible.
So Natasha tried to solve what was torturing her by herself.
The singer was snapped celebrating at Proud Camden in London - pouring drinks for herself, eating a cake by herself, dancing by herself, singing Happy Birthday to herself.
All she did was come out by herself in the ballroom, take a little arabesque and then stand.
For example, the difference between being an upper-middle-class striver who wears herself out staging a birthday party, and a fundamentalist whose husband moves the whole family into a bus, where she home-schools her five kids all by herself.