guise > usual manner, usual appearance

9 As threatening to devour all that its power despise.

212.22

The waues come rolling, and the billowes rore
2 Outragiously, as they enraged were,
Or wrathfull Neptune did them driue before
4 His whirling charet, for exceeding feare:
For not one puffe of wind there did appeare,
6 That all the three thereat woxe much afrayd,
Vnweeting, what such horrour straunge did reare.
8 Eftsoones they saw an hideous hoast arrayd,
Of huge Sea monsters, such as liuing sence dismayd.

1 The waves come rolling, and the billows roar 2 Outrageously, as they enraged were,

Outrageously > Violently, intemperately as > [either as though]

3 Or wrathful Neptune did them drive before 4 His whirling chariot, for exceeding fear: 5 For not one puff of wind there did appear, 6 That all the three thereat waxed much afraid,

That > [So that] thereat > thereupon; as a result of that waxed > grew

7 Unweeting what such horror strange did rear.

Unweeting > Not knowing horror > horror; roughness (of the water) rear > bring into existence, cause; hence: portend