英和和英

reason for being

the reason

to reason

a reason

give reasons for

reason

to give the reason

derive by reason

for what reason

the dictates of reason

grounds

yield to reason

to stand to reason

for such a reason

for a certain reason

for certain reasons

to assign a reason（for doing something）

to assign a reason （for doing anything）

an ulterior motive

an ulterior motive

My reason holds good.

a statement of reasons

for those reasons

because of the reason given

cause to decide

an underlying motive

set forth one's reasons

the real reason

an underlying cause

an ostensible reason