monotomy (noun) dullness: quality of being boring
Sinonime: babbling, blabbermouth, chattering, chatty, effusive, flap jaw, gabby, glib, gossiping, gushing, long-winded, loose-lipped, loose-tongued, loquacious, motormouth, mouthy, prating, prattling, prolix, prosy, running on at the mouth, verbose, voluble, wind-bag, windy, wordy, yakkity, yakky
Antonime: mum, quiet,
reserved, silent,
still, untalkative