Errantia

1 clue
Free-swimming worms with developed sense organs
Similar answers:
Aberrance
Aberrancy
Aberrant
Aberrantly
Aberrate
Aberration
Aberrations
Absentia
Afterrafterdrafter
Agogetterram
Aintiastinker
Aintiawoman
Allterrain
Amentia
Antiabortion
Antiacid
Antiacids
Antiaging
Antiam
Antiamerican