the ends justify the means
Alternative form of the end justifies the means.
ADV
really, truly
How can you truly justify spending so much money on a car you barely drive?
hardly
The poor quality of the meal hardly justified the expensive price we paid for it.
VERB + JUSTIFY
can/could | attempt to, seek to, try to | need to
be difficult to, be hard to
It was hard to justify spending so much money on a new phone when her old one still worked.
PREP
on the grounds of/that
The store refused to refund my purchase on the grounds of the no-return policy.
to
She had to justify her decision to leave the company to her worried parents.