• 没ぼつになる — to be rejected; to be scrapped
• 没頭ぼっとう — total absorption; to be immersed in something
• 没収ぼっしゅう — confiscation; to seize officially
• 没後ぼつご — after one’s death
• 没落ぼつらく — downfall; collapse; decline
• 日没にちぼつ — sunset; sundown
• 沈没ちんぼつ — sinking; going under
• 埋没まいぼつ — being buried; becoming hidden or overlooked
• 出没しゅつぼつ — appearing and disappearing; frequenting an area (often animals or criminals)

On the left, 氵 is the water radical, showing something surrounded or swallowed by water. The right side gives the sound ボツ and suggests taking or drawing something in. Together, 没 paints the moment when an object slips under the surface and vanishes from sight. From there come meanings like sinking, disappearing, and even a draft or idea being “dropped” and no longer existing.