take (one's) word on (something)

take (one's) word on (something)

To accept what one says without further verifying or investigating. You're right to be wary, but I think we can take John's word on this issue. He has no reason to lie to us.
See also: on, take, word
Farlex Dictionary of Idioms.

take someone's word for something

 and take someone's word on something
to believe what someone says about something without seeking further information or proof. It's true! Take my word for it. I can't prove it. You will have to take my word on it.
See also: take, word
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

take (someone's) word for it

To believe what someone says without investigating further.
See also: take, word
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • take (one's) word for it
  • take (one's) word on it
  • take my word for it
  • take somebody's word for it
  • take someone's word
  • take (one's) word
  • take (one's) word for (something)
  • take word for
  • take word for it
  • take on faith