Adjectives and prepositions Relative to Relevant to Characteristic of Specific to Common to Appropriate to Typical of. Adjectives and their opposites Abstract Concrete Simple Complex. Adjectives and their opposites Quantitative Qualitative Accurate Inaccurate. Adjectives and their opposites Significant Insignificant Rough Precise. Other important, frequent adjectives and typical combinations with nouns Apparent Potential Principal Rigorous.