As an adult (which was in fact rare, as nearly all changelings were thought to die in early childhood) it was disabled, gibbered instead of talked, and mistrusted people.
en.wikipedia.org Three actors are hopping, scratching, gibbering like chimps, hissing like snakes and roaring like gorillas, when suddenly one breaks off.
www.ft.com They do it every point, every play -- low fives, high fives, all this well done gibber-jabber.
www.theroar.com.au Other landforms include mesas, escarpments, gorges, gibber plains, dunefields, ephemeral clay pans, semi-permanent waterholes, and artesian springs.
en.wikipedia.org The station contains many landforms including gibber plains, sand-plains, floodplains, channels and ephemeral rivers.
en.wikipedia.org