气势 (qì shì) literally combines 气 (qì, 'vital energy' or 'spirit') and 势 (shì, 'power', 'momentum', or 'trend'). Together, it conveys a strong, palpable sense of moral force, commanding presence, or overwhelming momentum — not just physical power, but the intangible aura of confidence, authority, or determination that influences others. It often describes how a person, group, performance, or even natural phenomenon projects strength and resolve.

This word is commonly used in contexts involving leadership, public speaking, martial arts, artistic performances, military parades, or even nature — such as towering mountains or roaring rivers — where scale and psychological impact matter more than brute strength. Unlike mere 'strength' (力量), 气势 emphasizes perceptible influence and psychological dominance. It’s frequently modified by adjectives like 宏大 (grand), 雄伟 (majestic), or 逼人 (overwhelming), and appears in set phrases like 气势磅礴 (magnificent and awe-inspiring).