No, "off" is a preposition, adverb, or adjective, not a verb.
"Off" can function as an adverb, preposition, adjective, or verb.
No, "sign off" is not hyphenated when used as a verb. However, it can be hyphenated when used as a noun (e.g., "She gave her sign-off on the project").
No, "jumped" is not a preposition. It is a verb that describes the action of leaping off the ground.
"Beheaded" is a verb. It is the past tense and past participle form of the verb "behead," which means to cut off someone's head.
"Chip" can be a noun or a verb. As a noun, it refers to a small, thin piece that has been removed from something larger. As a verb, it means to break off a small piece from something.
"Go off" is not a verb. "Go" is a verb, but "off" is a preposition. However, "go" is an action verb.
Take off is a verb it is called a phrasal verb because it consists of two words.The plane is going to take off soon.
fell offFell off is a phrasal verb. In this sentence the verb is past tense.
This type of verb is called a phrasal verb.
No, the word 'payed' is a verb, the past tense of the verb to 'pay'.The word 'off' is functioning as an adverb, modifying the verb.
Yes. The subject is "most" and the verb is "wear" -- "most" uses the singular verb "wear" and not wears.Most of the effects of caffeine quickly wear off. = Most wear (off).
The people get off or the people are getting off.
No a sentence is not a verb. A verb is a word that does.Three frogs were "sitting" on a log. One decided to "jump" off.
No, the word 'layoff' is a noun, a word for temporary or permanent removal of a worker or workers; a word for a thing.The verb form is 'lay off', the verb 'lay' modified by the adverb 'off'.Examples:The layoff lasted for six months. (noun)We have to lay off several workers. (verb and adverb)
Take off, obviously ! 
Take off, obviously ! 
Break is a verb when used without an object. As in 'to break off friendly relations'