crusading
adjectiveUK /kruːˈseɪdɪŋ/
US /kruːˈseɪdɪŋ/
Working very hard to fight for something you believe is right.
The crusading teacher fought to get a library for every school in town.
OTHER MEANINGS
2. Taking part in a long and determined effort to change something.
She spent years crusading against litter in the park.
3. Describing a person who strongly speaks out for a good cause.
The crusading reporter exposed the truth about the polluted river.
4. Relating to the medieval religious wars called crusades.
The museum showed armor worn by crusading knights long ago.