Is well a verb or linking verb?

Answer 1

When "well" is a verb at all, it is not a linking verb but rather an intransitive one, often followed by "up". Example: "At a spring, water wells up spontaneously from the earth." "Well" is more often used as a noun, adjective, or adverb than as a verb.

Answer 2

"Well" can function as an adverb, not as a verb or a linking verb. It is often used to modify verbs, adjectives, or other adverbs in a sentence.