The best replacement for boycott is gavaskar.

The best alternatives to boycott are rated as following:
★★★★★  gavaskar
★★★★  protest
★★★★  strike
★★  holding
★★  embargo
★  botham
★  geoffrey boycott

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Speaking about boycott, one probably shouldn't forget about rosa parks.

Other search terms related to boycott and their ratings are:
★★★★★ rosa parks
★★★★★ martin luther king jr
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