SERIOUS

adjective Etymology: Middle English seryows, from Anglo-French or Late Latin; Anglo-French ~, from Late Latin seriosus, alteration of Latin serius weighty, ~; probably akin to Old English swǣr heavy, sad Date: 15th century thoughtful or subdued in appearance or manner ; sober , 2. requiring much thought or work , of or relating to a matter of importance , 3. not joking or trifling ; being in earnest , pious , deeply interested ; devoted , 4. not easily answered or solved , having important or dangerous possible consequences , excessive or impressive in quality, quantity, extent, or degree , ~ness noun Synonyms: see: ~