Antonyms for blah

dull, lifeless:

full of life, interesting, exciting, spirited.

noun:

common sense, absorption, reasonableness, judgment, stimulation, excitement, engagement, relief, immersion, animation, diversion, entertainment, enchantment, enlivenment, fascination, horse sense, involvement, discernment, sense, captivation, sensibleness, beguilement, bewitchment, amusement, levelheadedness, reasonability, invigoration, wisdom, engrossment, rationality.