15+16

adroit: skillful

brevity: brief

decorum: dignified behaviour

err: to make a mistake

hinder: obstruct

largess: generosity

obsolete: no longer valid

pontificate: speak pompously

reticent: restrained

tirade: stream of verbal abuse

adulation: worship

bristle: to show irritation

decoy: lure

erratic: wandering

histrionic: theatrical

laud: praise

obstreperous: noisy and boisterous

portend: foretell

retraction: withdrawal

titter: giggle quietly