be fickle, not to stick to one's words

under tongue, stay with words what you said

back out of one's word

live carefully and safe among enemies

to differ from one's word or command

to be eloquent and smooth-spoken

reference to talkativeness

to speak in a very refined language

be learnt by heart, constantly recited or uttered

something which seems nice to hear

to be a fluent and sharp speaker

be rude, be foul-mouthed

to cut one's tongue off

to be left dry-tongued, to speak a lot, loquaciousness

to be unable to speak, become helplessly speechless

extremely eloquent

speak very chaste language