1 Henry VI: lavish tongue

From William Shakespeare’s Henry VI, part 1 (II: 5):

RICHARD PLANTAGENET:

This day, in argument upon a case,
Some words there grew ‘twixt Somerset and me;
Among which terms he used his lavish tongue
And did upbraid me with my father’s death.

lavish tongue: unrestrained expression or language, a standard Elizabethan dramatic cliche