Describing with precision

These are the sharper versions of adjectives you already have: 명확하다 where you used to say 분명하다, 드물다 where you used to say “not many”. Words ending in -적 are nouns that take 이다, so they change shape in a way the others do not: 구체적이에요, 구체적인 계획, 구체적으로. Most of the rest behave like any adjective in 하다, and turn into an adverb with -게: 명확하게, 유연하게.