unmanly > not human
4 And stared ghastly: some for inward shame,
ghastly > {Ghastlily, horribly; in a ghost-like manner; as if terrified by the supernatural}
5 And some for wrath, to see their captive dame; 6 But one above the rest in special,
in special > especially, particularly
7 That had a hog been late, hight Grill by name,
late > lately hight > called Grill > "Pig" (Greek; one of Circe's former lovers (Odyssey 10.238-41): the character figures in Plutarch's dialogue, Whether the Beasts have the Use of Reason)
8 Repined greatly, and did him miscall,
Repined > Fretted, complained miscall > revile
9 That had from hoggish form him brought to natural.