Adverbs

No, "irregardless" contains a double negative. "Regardless" is proper English, but "irregardless" is not.

The adverb is truly. The suffix -LY is added, but for this particular word, the E was dropped. So it does get misspelled.

The word "example" is a noun, not an adverb.

Decide is the verb and decidedly would be an adverb. But it has other connotations besides referring to a decision.

The adverb of nasty is nastily.

An example sentence is "she nastily insulted her rival".

Began is a verb. It's the past tense of begin.

yes

It can be both an adjective and an adverb, depending on context.

Yes, the word calmly is an adverb.
An example sentence is "she calmly walks away from the argument".

No, it is not an adverb. Silver is a noun for a color or metal element (or silverware), and is also used as an adjective.

Objects are usually nouns or noun phrases. Adverbs modify verbs. So no.

nope

Annoying is not an adverb, it is an adjective. The comparative of the adjective annoying is more annoying.

Annoyingly is the adverb form of annoying. More annoyingly is the comparative form of annoyingly. Example: Can you find anyone more annoyingly chipper than Barbara?

No, it is an adjective.

No, the word stood is not an adverb.
Stood is a verb, because it is an action.

Randomly is an adverb. Random is an adjective.

He randomly started screaming.

Randomly describes screaming, therefore is an adverb, since screaming

is a verb.

an adverb is a word that describes a verb.

That was random.

Random describes that, therefore is an adjective.

An adjective describes a noun.

That is a noun.

No, Thursday is a proper noun, a day of the week. When we say "it rained Thursday" we are omitting the preposition "on."

Dissimilarly

Yes, it can be either an adjective or adverb. It can mean continuously, or traveled without stopping.

The adverb for 'Just' is justly. The adverb for 'Punctual' is punctually. If you wanted to append them it would look like "Justly and punctually."

There is no definite adverb for the word "slept" (past tense of to sleep).

Adverbs formed from the verb include sleepfully and sleeplessly.

An adverb is a descriptive word that modifies a verb. 'Soaked' does not modify a verb (eg the sentence "Dave soaked glanced at Karen, who melted" does not make sense, because 'soaked' isn't an adverb), and therefore is not an adverb. In a sentence that uses 'soaked': "Dave soaked Karen at the water gun festival, and thereafter she was soaked," 'soaked' is used first as a past-tense verb, and second as predicate adjective modifying 'Karen.' Therefore, one may conclude that 'soaked' is not an adverb.

An adverb modifies a verb. An adjective modifies a noun.

(You would have to use the adverb, which is tenderly.)

She touched his face tenderly.

Recession is a noun. It has an adjective form recessional and an adverb recessionally (which refers to the manner). There is a related adverb "recessive" (not dominant) which has the adverb form recessively.