words alone are no proof.; an oral [verbal] promise is rather dubious [not enough].; oral expressions [words] cannot be taken as evidence.; verbal statements are not guarantee.; word of mouth cannot be trusted.; words don't carry conviction
Example Sentences:
1.
Verbal statements are no guarantee . 口说无凭。
2.
The spoken word flies ; the written word remains 口说无凭，立据为证。
3.
Do not sign , who knows you got pay ? the mouth says to not have by 不签字，谁知道你领了工资没有？口说无凭嘛。
4.
I said no rhyme or reason , they have real ability to pass the test would do 口说无凭，得靠真本事通过考验才行。
5.
Sweetie pie , i think it s your lucky night i m getting buck wild tonight 我来不及预警你就是只会怀疑其实口说无凭都是我对不起你
