• 我慢がまん — patience; endurance; putting up with something
• 慢性まんせい — chronic (illness, condition)
• 慢心まんしん — overconfidence; conceit
• 怠慢たいまん — negligence; carelessness through laziness
• 高慢こうまん — haughtiness; snobbish pride
• 傲慢ごうまん — arrogance; being egotistical and overbearing

With the heart radical 忄りっしんべん on the left, 慢 shows a state of mind that becomes slow and stuck — swelling with pride or carelessness. From chronic illness to arrogant attitudes, it often marks something that drags on, or a heart that refuses to change.