suffragist

Think opposite of saffron brigade term used for Hindutva activists not supporting woman's right (to vote) [No offense meant; just for mnemonic]

Sufferer + just: A suffrajist is being just or trying to do justice to suffrers (women in most cases)

Suffragist... XXXgist always means a person... so Suffra rhymes with sufferer... & all know sufferer is always women... so a person with women for her rights... or advocate of women rights (vote even)

Remember FEMINIST both are almost same.

suffragist~polygamist; a suffragist will fight for women rights like voting etc. (please forget about polygamy that was just to bring you to this mnemonic!) ...afterall just a cue shud b enough 2 recollect the word !