🧩 Grammar · Phrasal Verbs
Separable vs Inseparable Phrasal Verbs
Why “turn it off” works but “look it after” doesn’t — the word-order rule that trips up almost every learner.
Grammar › Phrasal Verbs › Separable vs Inseparable Phrasal Verbs
The rule in one sentenceWith a separable phrasal verb the particle can move around a noun but must follow a pronoun (Sony called off the premiere / called it off, never called off it) — with an inseparable one the particle never moves at all, noun or pronoun (Mary Poppins looks after the children / looks after them, never looks the children after).
Why word order suddenly matters
Most phrasal verbs behave exactly like ordinary verbs — the object just goes after them. The trouble starts with verbs that take a particle and an object, because English secretly splits them into two behaviours, and only one of them lets the particle move.
Separable phrasal verbs let the particle sit either side of a noun object: Sony called off the premiere or Sony called the premiere off are both fine. But swap the noun for a pronoun and the rule tightens: it must go in the middle. Sony called it off is correct; Sony called off it is not.
Inseparable phrasal verbs never let anything come between the verb and its particle, whether the object is a noun or a pronoun: Mary Poppins looks after the Banks children and Mary Poppins looks after them — never looks the children after or looks them after.
🎬 Compare: “Wyatt Earp in Tombstone never gets over his brother’s murder” (inseparable — “get over” never splits, so “gets it over” is wrong) vs. “Sony put off the release, then finally put it off again” (separable — the pronoun forces the split).
Two different phrasal verbs, two different rules — and no way to tell which is which except by learning them.
A third group avoids the problem entirely: some phrasal verbs never take an object at all, so separable-vs-inseparable simply doesn’t apply to them. Cinema Paradiso came out in 1988 has no object to place anywhere.
How to build it: three patterns to know
Separable — the particle can move
Sony called off the premiere of The Interview in 2014.
Sony called the premiere off in 2014.
noun object: either order is fineSony called it off after the hacking threats.
pronoun object: must go in the middleSony called off it. (never do this)
Inseparable — the particle never moves
Mary Poppins looks after the Banks children.
Mary Poppins looks after them.
pronoun object: still stays togetherMary Poppins looks the children after. (never do this)
Mary Poppins looks them after. (never do this either)
No object at all
The Great Escape came out in 1963.
Toshiro Mifune broke out internationally after Rashomon.
Ikiru came it out. (there’s nothing to place — no object exists)
When to use which: spotting the type
Signs a verb is separable
- You can insert a noun phrase between the verb and particle and it still sounds natural: “Warner Bros put the release off.”
- Most learner dictionaries mark it “[often passive, transitive, separable]” — look for that label.
- Many separable verbs describe a completed action on a thing: cancelling, delaying, waking, removing, discovering.
Signs a verb is inseparable
- The verb and particle feel like one glued unit — you can’t imagine anything fitting between them: “Harry runs into Draco Malfoy.”
- Many inseparable verbs describe an ongoing relationship or process rather than a single completed action: caring for, dealing with, believing in.
- If it’s followed by a preposition rather than a true particle (look after, run into), it’s almost always inseparable.
Quick test: the pronoun trick
There are no signal words for this rule — but there is a reliable trick: replace the object with “it” or “them” and see where the pronoun is forced to go.
If “it” has to go in the middle (Sony called it off), the verb is separable.
If “it” has to go after the whole phrase (Mary Poppins looks after it), the verb is inseparable.
If there’s no object to replace at all (Tokyo Story came out), the rule doesn’t apply — it’s simply intransitive.
Visual guide
Teacher Teddy’s illustrated guide to this rule is being drawn — the full swipe-through infographic will appear here soon.
Common mistakes
❌ Sony called off it after the hacking threats in 2014.
✅ Sony called it off after the hacking threats in 2014.
“Call off” is separable — a pronoun object must go between the verb and the particle, never after it.
❌ Mary Poppins looks the Banks children after every day.
✅ Mary Poppins looks after the Banks children every day.
“Look after” is inseparable — the particle always stays right next to the verb, whatever the object is.
❌ Harry runs Draco Malfoy into at Madam Malkin’s shop.
✅ Harry runs into Draco Malfoy at Madam Malkin’s shop.
“Run into” (meet by chance) is inseparable — don’t insert the object in the middle, even though it’s just a noun.
❌ Warner Bros put off it several times during the pandemic.
✅ Warner Bros put it off several times during the pandemic.
“Put off” is separable, so the pronoun “it” must sit between the verb and the particle, just like with “call off”.
Exceptions & tricky cases
Four things that catch out even confident learners.
1. One verb, two behaviours. “Work out” is separable when it means “solve” (Benoit Blanc worked the mystery out / worked it out) but takes no object at all when it means “succeed” (everything works out for Paddington in Paddington 2).
2. Long noun phrases usually go after the particle. Even with a separable verb, a long object rarely splits it for rhythm’s sake: “Universal called off the eagerly-anticipated sequel to Silverado” sounds far more natural than splitting the long phrase in the middle.
3. Three-word phrasal verbs are always inseparable. “Look forward to” and “look up to” (verb + particle + preposition) never split, whatever the object — these get their own dedicated lesson in Three-word phrasal verbs.
4. Fixed idioms resist splitting even when they’re technically separable. “Give up” usually splits happily (the detective in Memories of Murder gives it up — though he never does!), but in a frozen idiom like “give up the ghost” native speakers rarely split it at all.
Practice: choose the correct word order
Eight quick questions — every one built around a real film or franchise.
1. The alarm clock in The Truman Show wakes ___ every single morning, right on schedule.
“Wake up” is separable — a pronoun object must go in the middle.
2. Harry accidentally ___ at Madam Malkin’s shop in Harry Potter and the Philosopher’s Stone.
“Run into” is inseparable — the object never comes between the verb and the particle.
3. Ofelia struggles to ___ in Pan’s Labyrinth.
“Get over” is inseparable — the pronoun stays after the whole phrase.
4. Sony was ready to release The Interview, but after the 2014 hacking threats they ___.
“Call off” is separable — the pronoun “it” must split the verb and particle.
5. The undercover officer has to ___ carefully before revealing his identity in Infernal Affairs.
“Look into” is inseparable — the object always follows the whole phrase.
6. Marcello Mastroianni ___ internationally after La Dolce Vita.
“Break out” (become famous) takes no object at all — there’s nothing to place.
7. The studios wanted to postpone Y Tu Mamá También’s release, so they ___.
“Put off” is separable — the pronoun goes in the middle, just like “call off”.
8. Indiana Jones often ___ during his adventures.
“Come across” (find by chance) is inseparable — the object always follows the full phrase.
Keep going
Related lessons in Phrasal Verbs:
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