Synonyms of 'interventionist'
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If you describe someone as interfering, you are criticizing them because they try to get involved in other people's affairs or to give them advice, especially when the advice is not wanted.
She regarded her mother as an interfering busybody.
Her bodyguards were less than gentle with intrusive journalists.
Thesaurus for interventionist from the Collins English Thesaurus
Interventionist policies are policies which show an organization's desire to become involved in a problem or a crisis which does not concern it directly .