"Placidly" is an adverb. It describes how an action is performed, indicating that it is done in a calm, peaceful, or undisturbed manner. Adverbs often modify verbs, adjectives, or other adverbs, and in this case, "placidly" typically modifies a verb to convey a sense of tranquility.
part of speech
Adjective
What part of speech is thaw
The part of speech for oscillate is verb.
An adjective is a part of speech.
I placidly stared at my husband; content to be with him forever.
The cat placidly sat down on the chair and slept.
He placidly placed his books down and began studying.
114 or 108 in different books
The horse trotted along placidly- it and its rider were in no hurry at all.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.