Manner adverbs describe how an action happens. They usually answer the question "How?" about a verb. In English, many manner adverbs end in -ly. They can modify verbs, and sometimes verb phrases or entire clauses.

Many English manner adverbs are formed by adding -ly to an adjective. Some spelling changes happen when the adjective ends in -y or -le. Not all words with -ly are adverbs, but this pattern covers most common manner adverbs.

Adjective	Adverb
quick	quickly
careful	carefully
happy	happily
gentle	gently
quiet	quietly

Some common manner adverbs do not use the -ly pattern. They have unique forms or share a form with an adjective. These adverbs are frequent in basic English and follow their own rules of use.

Word/Phrase	Definition
fast	This adverb means at high speed.
hard	This adverb means with effort or force.
well	This adverb means in a good way.
late	This adverb means after the expected time.
early	This adverb means before the expected time.

In English, a manner adverb usually goes after the main verb or after the object. With short answers or intransitive verbs, it often comes directly after the verb. With longer objects or to add focus, it can appear at the end of the clause.

Rule
A manner adverb can appear after the main verb.
A manner adverb can appear after the object.
A manner adverb can appear at the end of the clause.

Adjectives describe nouns, and adverbs describe verbs. In many cases, the adjective and the adverb are related by meaning but have different forms. Using the adverb form with a verb keeps the sentence clear and standard.

Word/Phrase	Definition
careful	This adjective describes a person or thing.
carefully	This adverb describes how something is done.
quiet	This adjective describes a state or environment.
quietly	This adverb describes how an action happens.