entryist

plural entryists

1. A participant in or proponent of entryism.

   He said encouraging people to join up to back a single issue, or candidate, was “not a good approach to running a political party and its supporters, because entryists tend to be fanatics, as the Labour party has found”.

   2018 August 22, Heather Stewart, quoting Jacob Rees-Mogg, “Jacob Rees-Mogg tells Leave.EU: don't join Tories on my account”, in The Guardian, →ISSN

   1 more example

   Watson’s letter was a riposte to the accusation made on Tuesday by Corbyn’s campaign that he was “peddling conspiracy theories” after he said in a Guardian interview that Labour was at risk from “Trotskyist entryists”.

   2016 August 10, Heather Stewart, “Tom Watson sends Corbyn 'proof of Trotskyist Labour infiltration'”, in The Guardian, →ISSN

comparative more entryist · superlative most entryist

1. Relating to entryism.

   All this may in fact be being hyped up by the Tory right and left alike. But Mr Banks’s Leave.EU claims to have 88,000 supporters. And this is without doubt an entryist campaign by the post-Ukip right to take over the Tories.

   2018 August 21, Editorial, “The Guardian view on Tory party entryism: a real and present rightwing danger”, in The Guardian, →ISSN