Words Ending in Sion – Meaning, Rules & 100+ Examples

The suffix “–sion” is a common English ending used to form nouns from verbs, usually describing an action, process, or state. Understanding words ending in sion not only improves your vocabulary but also helps you grasp English word formation rules, spelling patterns, and pronunciation.

In this guide, you’ll learn:

• The meaning and grammar rules of the suffix –sion.
• The difference between –sion and –tion.
• A complete list of words ending in –sion (with meanings and examples).
• Tips and exercises to memorize and use them confidently.

Let’s dive into the fascinating world of English suffixes and word formation.

What Does the Suffix “–Sion” Mean?

The suffix “–sion” is used to form nouns that describe:

• An action (expansion → the act of expanding)
• A state or condition (confusion → being confused)
• A process or result (decision → the result of deciding)

Origin

The suffix “–sion” comes from Latin –sio / –sionis, meaning “the act of” or “the state of.”
It’s often attached to verbs ending in –de, –d, –se, or –t.

Example:

• Decide → Decision
• Expand → Expansion
• Confuse → Confusion
• Admit → Admission

Also Read: Words ending in ance

Grammar Rule: When to Use “–Sion” Instead of “–Tion”

Both –sion and –tion turn verbs into nouns, but the choice depends on the verb ending.

Verb Ending	Add Suffix	Example
Verbs ending in –de or –d	Add –sion	decide → decision
Verbs ending in –se	Add –sion	confuse → confusion
Verbs ending in –t	Often add –sion	permit → permission
Verbs ending in –te	Usually take –tion	educate → education

Tip:
If the base verb ends with –d, –de, or –se, the noun usually ends in –sion.

Common Words Ending in Sion (With Meanings)

Here’s a categorized list of 100+ words ending in –sion to expand your English vocabulary. These are grouped by syllable count and usage type for easy learning.

Everyday Use Words

Word	Meaning
Decision	A choice or judgment made after thinking
Confusion	State of being unclear or puzzled
Permission	The act of allowing or granting approval
Vision	The ability to see or imagine
Mission	A specific task or purpose
Division	The act of separating into parts
Occasion	A special event or time
Passion	Strong emotion or enthusiasm
Admission	Entry or acceptance into a place
Expression	The act of showing feelings or thoughts

Academic & Professional Words

Word	Meaning
Discussion	The act of talking about something in detail
Conclusion	The end or result of something
Profession	A type of job requiring special education
Expansion	The act of increasing in size or amount
Impression	The effect or impact on someone’s mind
Commission	An official group or task assigned
Transmission	The process of sending or passing something
Submission	The act of presenting or yielding
Revision	The process of reviewing or editing
Suppression	The act of stopping something forcibly

Scientific & Technical Words

Word	Meaning
Compression	The act of pressing something together
Aggression	Hostile or violent behavior
Conversion	The process of changing from one form to another
Erosion	The gradual wearing away of something
Emission	The act of releasing light, heat, or gas
Collision	An instance of two things hitting each other
Explosion	A violent burst or release of energy
Inclusion	The act of containing or involving something
Extension	The act of lengthening or stretching out
Admission	The process of entering or accepting

Abstract or Emotional Words

Word	Meaning
Depression	A state of deep sadness or low mood
Compassion	Deep sympathy or concern for others
Confession	The act of admitting a fault or sin
Obsession	An uncontrollable focus or fixation
Expression	Showing one’s feelings through words or gestures
Impression	The impact left on someone’s mind
Suppression	The act of holding back emotions or actions
Intention	The aim or plan behind an action
Possession	The act of owning something
Decision	The mental process of choosing between options

Longer or Complex Words

Word	Meaning
Intermission	A short break between events or acts
Transmission	Process of sending signals or messages
Decompression	Release of pressure
Repression	The act of restraining or suppressing
Aggression	Hostile action or behavior
Concession	The act of yielding or granting
Progression	A gradual movement or development
Succession	Sequence or order of events
Submission	The act of yielding or presenting something
Supervision	The act of overseeing activities

Difference Between “–Sion” and “–Tion”

Feature	–Sion	–Tion
Origin	Latin –sio	Latin –tio
Verb ending	Verbs ending in –d, –de, –se, –t	Verbs ending in –te, –tate, –ify
Example	expand → expansion	educate → education
Sound	Pronounced /ʃən/ or /ʒən/	Pronounced /ʃən/
Function	Process, state, or result	Process, act, or state

Example:

• Confuse → Confusion (–sion)
• Create → Creation (–tion)

Grammar Insight: Sion Suffix Meaning

The –sion suffix typically forms abstract nouns.
It adds a sense of action, process, or condition.

Common word patterns:

• –de → –sion → decide → decision
• –se → –sion → revise → revision
• –t → –sion → permit → permission

These patterns are key to building advanced vocabulary and understanding English morphology (word structure).

More Read: Words ending in ship

Sentences Using Words Ending in –Sion

Word	Example Sentence
Decision	The decision to travel was made last night.
Confusion	The new rules caused confusion among students.
Permission	You need permission to enter the lab.
Revision	I made a quick revision before submitting my report.
Submission	The deadline for submission is tomorrow.
Admission	Her admission was based on merit.
Profession	Teaching is a respected profession.
Impression	His kindness made a lasting impression.
Extension	The teacher gave an extension for the assignment.
Explosion	The explosion was heard from miles away.

For Students: Practice Exercises

1. Convert these verbs into nouns using –sion:
   • decide → _______
   • expand → _______
   • include → _______
   • confuse → _______
   • permit → _______
2. Fill in the blanks:
   • The _______ of the disease was quick.
   • She gave me _______ to use her notes.
   • My teacher’s _______ helped me improve.
3. Write 5 sentences using different –sion words.

Final Thoughts:

Learning words ending in –sion helps you strengthen your grammar and vocabulary, recognize word formation patterns, and improve both your writing and comprehension skills. Whether you’re an ESL learner, student, or teacher, understanding suffixes like –sion and –tion is an essential part of mastering English.

So, the next time you come across words like decision, discussion, or confusion, remember they’re not just ordinary words, but powerful transformations of actions into ideas that make your language richer and more expressive.

FAQs On words ending in sion