• 絶対ぜったい — absolutely
• 絶望ぜつぼう — despair
• 絶交ぜっこう — breaking off relations
• 絶滅ぜつめつ — extinction
• 中絶ちゅうぜつ — abortion, interruption
• 絶賛ぜっさん — high praise
• 拒絶きょぜつ — rejection
• 絶たえる — to die out

絶 combines the thread radical 糸 with 色, giving a sense of something being cut or severed. It’s often used to describe things that are ended or lost — like hope, connection, or life itself.

希望きぼうを 絶たってはいけません。
Don't lose hope.

二人ふたりは 絶交ぜっこうしたそうです。
It seems they ended their friendship.

“ぜったい” means “absolutely” or “definitely,” used for strong emphasis.
“たえる” means “to come to an end” — used for hope, lines, traditions, and more.