How do you say zealous in Spanish?

Phrases in english containing zealous translated to English

• over zealous [overzealous] in Spanish is fanático, extremista, fundamentalista

Sentences containing zealous in Spanish

So we see extraordinary hardships cheerfully borne (indeed, apparently enjoyed) by zealous mountaineers, earnest single-handed yachtsmen floating round the world, and all-weather fishing-hobbyists sit patiently at the side of, and sometimes in, rivers, undeterred by the paucity of their catches