revolutionary

US /ˌrev.əˈluː.ʃən.er.i/
UK /ˌrev.əˈluː.ʃən.er.i/
"revolutionary" picture
1.

involved in or causing a revolution

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The revolutionary forces marched towards the capital.
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He was a leader of the revolutionary movement.
:
rebelliousinsurgentmutinoussubversiveradical
2.

involving or causing a complete or dramatic change

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The invention of the internet was a revolutionary development.
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This new technology offers a truly revolutionary approach to energy production.
:
innovativegroundbreakingpioneeringtransformativeradical
1.

a person who advocates or engages in political revolution

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Che Guevara is considered a famous revolutionary.
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The government arrested several suspected revolutionaries.
:
rebelinsurgentmutineeragitatorradical