欠

けっ 2 words

• 欠席けっせきabsence, non-attendance

  欠+席 · here “lack” (from けつ)

• 欠点けってんfaults, defect, weakness

  欠+点 · here “deficient, lacking” (from けつ)

けつ 1 word

• 不可欠ふかけつindispensable, essential

  不+可+欠 · here “lack”

Also written with 欠

These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.

• 欠けるかける
• 欠陥けっかん
• 欠くかく
• 欠乏けつぼう