Some adjectives are formed by adding prefixes or suffixes to nouns, verbs, or adjectives.
-less means without something (e.g., hopeless)
-ful means full of or having something (e.g., hopeful)
-ish means like or similar to (e.g., childish, bluish)
-en means made of (e.g., wooden, woollen)
-able means can be done or able to (e.g., drinkable)