What is an Intransitive Verb?
Definition, Object-Free Syntax, Ambitransitive Examples & Verb Lists
An intransitive verb is an action or occurrence verb that expresses a complete grammatical event without taking a direct object; the action remains with the subject (e.g., sleep, arrive, laugh, collapse).
Whereas a transitive verb passes action onto a receiver, an intransitive verb is syntactically self-contained. A two-word clause like "Trains depart" or "Glass shatters" is already complete. Below, you will learn how to run the Direct Object Question Test, avoid mistaking prepositional phrases for direct objects, and recognize ambitransitive (ergative) verbs that switch between both patterns.
• Table of Contents
• Understanding Intransitive Verbs
An intransitive verb forms a complete predicate without transferring action to a direct object. When you write "The dog barked," the Subject + Verb (SV) clause is grammatically whole on its own.
Most purely intransitive verbs cluster into three semantic groups:
Verbs of Motion & Posture
Describe locomotion or physical stance where the subject moves or positions itself (e.g., arrive, go, sit, stand, emerge).
Bodily Reflexes & Vocalizations
Involuntary or expressive actions produced by the subject (e.g., sneeze, cough, laugh, sigh, sleep).
Verbs of Occurrence & Change
Events or state transitions that happen to the subject (e.g., happen, occur, vanish, disappear, exist).
• See it in Context
Because intransitive verbs do not take direct objects, writers expand them using adverbs (silently, suddenly) or prepositional phrases (in the hallway, at dawn) to specify manner, place, or time:
• The 3 Syntactic Rules of Intransitive Verbs
Whether a verb is strictly intransitive (like arrive or occur) or used intransitively in a specific sentence, it obeys three strict syntactic constraints:
1. No Direct Object Slot
Strictly intransitive verbs cannot transfer action to a noun or pronoun.
- Grammatical: The dog barked loudly.
- Ungrammatical: The dog barked the mailman.
2. Prepositional Phrases Are Not Direct Objects
Intransitive verbs are frequently followed by prepositional phrases that show place, time, or direction.
- She went to the library. ("the library" is the object of "to", not of "went")
- He sat on the bench. ("the bench" is the object of "on")
3. Intransitive Clauses Cannot Form the Passive Voice
Without a direct object to promote to the subject slot, passive conversion is impossible.
- Active Intransitive: The old oak tree fell during the storm.
- Ungrammatical Passive: The old oak tree was fallen during the storm.
• Transitive vs. Intransitive: The Direct Object Question Test
To verify whether a verb is transitive or intransitive, apply the Direct Object Question Test ("Verb + what/whom?") immediately after the verb. If the clause answers what? or whom? with a direct noun phrase, the verb is transitive. If it only answers where?, when?, or how?, the verb is intransitive.
Failing the Object Question (Intransitive)
If asking "Verb + what?" or "Verb + whom?" has no direct noun answer in the clause, the verb is intransitive.
Passing the Object Question (Transitive)
If a noun phrase directly answers "Verb + what?" or "Verb + whom?" without a preposition, the verb is transitive.
• Ambitransitive & Ergative Verbs
Many English verbs are ambitransitive, meaning they can function as either transitive or intransitive depending on clause structure. Within this group, ergative verbs (such as shatter, boil, open, and melt) allow the direct object of the transitive sentence ("He shattered the glass") to become the subject of the intransitive sentence ("The glass shattered").
Common Ambitransitive Verbs
Read (Unergative Ambitransitive)
The subject ("I") remains the agent whether a direct object is stated or omitted.
Shatter (Ergative / Unaccusative)
The transitive object ("shattered the glass") becomes the intransitive subject.
Sing (Unergative Ambitransitive)
Takes a direct object ("sang an aria") or stands complete with an adverbial modifier.
• Top 50 Intransitive Verbs
Below are 50 of the most common intransitive (and frequently intransitive) verbs in English. Click any card to view its definition and example sentences.
• Browse Intransitive Verbs by Letter
• Intransitive Verb Finder & Search Tool
Search for intransitive verbs by starting letter, ending letter, syllable count, or exact word length using the filter form below.
• Test Yourself: Find the Intransitive Verb
Click the intransitive verb in each sentence below. Watch out for adverbs and prepositional phrases that follow the verb without acting as direct objects.