take somebody's word for it

take (one's) word for it

To accept what one says without further verifying or investigating. You're right to be wary, but, in this case, I think we can take John's word for it. He has no reason to lie to us.

See also: take, word

take somebody’s ˈword for it

believe something that somebody has said: You know more about cars than I do, so if you think it needs a new gearbox, I’ll take your word for it. ♢ Can I take your word for it that the text has all been checked?

See also: take, word