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muscle

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verb American English pronunciation: muscle /ˈmʌs(ə)l/ 
Word Forms
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present tense
I/you/we/theymuscle
he/she/itmuscles
present participlemuscling
past tensemuscled
past participlemuscled

phrasal verb

muscle in

[intransitive]
Word Forms
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present tense
I/you/we/theymuscle in
he/she/itmuscles in
present participlemuscling in
past tensemuscled in
past participlemuscled in
to use your power or influence to get involved in a situation in which you are not needed or wanted

They are trying to muscle in and take away our customers.

muscle in on:

We didn't appreciate his muscling in on our conversation.

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