In the pairs of adjectives: trīstis - laetus; gravis - miser; brevis - longus; superbus - humilis, which pair is NOT antonyms but means "heavy" and "sad"?

In the context of the pairs of adjectives, "gravis" and "miser" both relate to the idea of being "heavy" and "sad," respectively.

"Gravis" translates to "heavy" in Latin, which can refer to both physical weight and a figurative heaviness, such as seriousness or intensity. "Miser," on the other hand, is commonly understood to mean "wretched" or "sad." Thus, while "gravis" conveys a sense of weightiness (literally or metaphorically), "miser" pertains to a more emotional or existential heaviness. This shared thematic connection of weight—whether physical or emotional—demonstrates that they are not strict antonyms.

In contrast, the other pairs consist of true antonyms or contrasting qualities. For example, "trīstis" (sad) and "laetus" (joyful) represent emotional opposites, as do "brevis" (short) and "longus" (long). "Superbus" (proud) and "humilis" (humble) also stand in opposition with their meanings.

Therefore, the correct answer identifies the pair that does not embody that direct opposition found in the