3 Shortened citation length, emphasised answer
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To masquerade as something/someonemasquerade as something/someone you are not:

to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.

The Cambridge Advanced Learner's Dictionary & Thesaurus s.v. masquerade as sb/sthCambridge Dictionary

To masquerade as something/someone you are not:

to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.

The Cambridge Advanced Learner's Dictionary & Thesaurus s.v. masquerade as sb/sth

To masquerade as something/someone you are not:

to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.

Cambridge Dictionary

2 Reformatting and improving attribution
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toTo masquerade as something/someone you are not

Cambridge Dictionary Online: 'to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.'

to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.

definition of 'to masquerade' in theThe Cambridge Advanced Learner's Dictionary Online& Thesaurus s.v. masquerade as sb/sth

to masquerade as something/someone you are not

Cambridge Dictionary Online: 'to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.'

definition of 'to masquerade' in the Cambridge Dictionary Online

To masquerade as something/someone you are not:

to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.

The Cambridge Advanced Learner's Dictionary & Thesaurus s.v. masquerade as sb/sth

1
source | link

to masquerade as something/someone you are not

Cambridge Dictionary Online: 'to pretend or appear to be someone or something;

Hooligans masquerading as protesters have once again caused disturbance.'

definition of 'to masquerade' in the Cambridge Dictionary Online