The word 厌倦 is formed by combining two characters that each convey a layer of mental and emotional fatigue. The first character, 厌 (yàn), carries the core meaning of disgust, loathing, or being fed up with something, a feeling of saturation or rejection. The second character, 倦 (juàn), introduces the sense of weariness, tiredness, or exhaustion from prolonged engagement. Together, they conceptually merge to depict a specific state where one's initial dislike or distaste (厌) has been compounded over time into a profound, wearying fatigue (倦), resulting in the overall meaning of being thoroughly sick and tired of something.