The word understood is a past tense verb or adjective. There is no adverb form other than the rarely-used "understandingly."
The word 'but' is a conjunction, and (arguably) a preposition to mean 'except' (e.g. No one but me understood). It is not a noun or adverb.
The past participle of "understand" is "understood."
Understood is the past tense.
The adverb of shy is shyly.
Slyly is the adverb form of sly.
The adverb is comprehensibly (in a manner that can be understood)*Not to be confused with comprehensively - done in a detailed and complete manner)
The word not is an adverb. The word there can be an adverb. The combination "not there" is a compound adverb.The homophone phrase "they're not" includes a pronoun, a verb, and an adverb, because the adverb not has to modify an understood adjective or adverb (e.g. "They're not colorful).
Yes, never is an adverb, and more rarely an interjection (Never!).
An elliptical adverb clause is one that omits certain words that are understood from the context. For example, in the sentence "She runs faster than he (does)," the phrase "does" is understood and omitted in the comparison. The full clause would include the verb for clarity, but the elliptical form is commonly used in conversation.
The adverb of sight is "visibly." It describes something that can be seen or perceived with the eyes. Other related adverbs include "clearly" and "apparently," which indicate how something is seen or understood.
Aboard can be a preposition or an adverb, depending on whether it has an object or whether the object is understood. "We were invited aboard the yacht." "We decided to sleep aboard rather than go ashore."
I know how to play as many songs as he.
The word 'but' is a conjunction, and (arguably) a preposition to mean 'except' (e.g. No one but me understood). It is not a noun or adverb.
The adverb form of "clarify" is "clarifyingly." It describes the manner in which something is made clear or easy to understand. For example, one might say, "She explained the concept clarifyingly, ensuring everyone understood."
The adverb form of "broaden" is "broadly." It describes the manner in which something is done in a wide or extensive way. For example, one might say, "The concept was discussed broadly to ensure everyone understood."
The word 'to' is not a pronoun.The word 'to' is a preposition: He gave the note to his mother.The word 'to' is an adverb: She came toafter a moment of unconsciousness.
No, it is not. The word between is a preposition. It may be considered an adverb when used with an understood object, e.g. two rooms with a bath between.