1. Big=massive (large in size, quantity, or extent), colossal (use this word, you emphasize something’s large), tremendous (INFORMAL)
2. Avoid=shun (if someone shuns something, s/he deliberately avoid that something or keep away from it.)
3. Fair=impartial (someone who is impartial is able to give a fair opinion or decision on something.)
4. Attack=assault (physically attack someone), assail (attack violently
5. Dislike=abhor (abhor means you hate something to a extreme extent for moral reasons), loathe (dislike very much)!
6. Ruin=devastate (it means damage something very badly, or utterly destroy it.)
7. Always=invariably (the same as always, but better than always)
8. Forever=perpetual (a perpetual state never changes), immutable (something immutable will never change or be changed)