← DefinitionshareGuesshardlineadjectiveHaving a very strict, uncompromising, or extreme position, especially in politics or policy.nounA person who holds an uncompromising or extreme position, especially in politics.SynonymsstrictadjectiverigidadjectiveuncompromisingadjectiveextremeadjectiveAntonymsflexibleadjectivemoderateadjectivelenientadjective