Diehard noun – One who adheres to traditional views. Fanatic and diehard are semantically related in overenthusiastic person topic. In some cases you can use "Fanatic" instead the word "Diehard" as a noun or an adjective.
Fanatic noun – A person with a strong and habitual liking for something. Diehard and fanatic are semantically related in zealot topic. You can use "Diehard" instead the word "Fanatic" as a noun or an adjective. Nearby Words: fan, fanatical, fanaticism, fanatically