Is Peered an Adverb?

In a peerless manner.

Is peered an adjective?

Examples of peered

In English, many past and present participles of verbs can be used as adjectives. Some of these examples may show the adjective use. The slatted roof kept the public from the rain, while eyes of eager schoolboys peered through the slated fence. Quite a few people peered into her eyes.

Is hatefully an adverb?

adverb. 'Riley clenched his teeth together, glaring hatefully at the girl. ' 'The blond man glared hatefully up to Greg, and the large man kicked him again, drawing another hurting grunt from Vincent.