Yes, 'No.' is a compleate sentance.
His action was justified.
A verb in a sentence shows action or tells information about the action. It indicates what the subject is doing or what is happening in the sentence. Without a verb, a sentence would not express any action or convey information about it.
The police action was geared to disburse the croud without incedent.
You can't make a complete sentence with just action words. That's like having a car without a steering wheel. A sentence must have a subject, and a word such as "Explode" cannot be a subject. A sentence must also convey an idea, and action words can't modify the idea or be the idea.
The action... described in a sentence. Since any sentence is about news... descriptions... it is considered to be the essence of the sentence proven by it's ability to stand alone without any other part of speech in communication.
it is an action
The subject is the one doing the action or what the sentence is about. Examples: She is going to the store. (She is the subject). I am hungry. (I would be the subject). The action that takes place in a sentence is the verb.
The action NEVER performs the subject. The subject can perform the action -- this is an active sentence has the word order S V O eg The dog chased the cat. In a passive sentence the action is performed on the subject. The cat was chased
The action in a sentence is the part of speech known as a verb.
Imperiously is an adverb describing an action as assuming power or authority without justification; arrogant, peremptory, and domineering. Example sentence: A member of the committee imperiously described people without health insurance as an anchor on prosperity.
vrebs are words that names an action or describe a state of being . It is important because there's no way to have a sentence without them
The subject is often near the start of a sentence: it is the thing or person that the sentence is about, and for an action verb, it is the thing or person performing the action. The verb is the action or state described in the sentence: what the subject does or is.