by word of mouth
устно, на словах
I don't want to write to them; I'd rather you did it by word of mouth.
- take the words out of (someone's) mouth
- bad-mouth (someone or something)
- foam at the mouth
- keep one's mouth shut
- Shut your mouth!
- leave a bad taste in one's mouth
- say a mouthful
- put words into (someone's) mouth
- shoot one's mouth off
- run off at the mouth
- not open one's mouth
- have a big mouth
- laugh out of the other side of one's mouth