creaking, critiquing, eking, freaking, leaking, peaking, peeking, reeking, shrieking, sneaking, speaking, squeaking, streaking, tweaking, wreaking
berantusias, berapi-api, bergairah, berjiwa keras, berkegiatan, berkemauan, berkobar-kobar, bernafsu, bersemangat, bersosoh, menggebu-gebu, menggelegak