无可挽回

• 一(one; initial)ASSOCIATIVE
• 尢(disabled person; insufficient)ASSOCIATIVE

From the beginning there was a shortage, so 無 means 'nothing at all'.

• 口(mouth; opening)RADICAL
• 丁(man; adult male)PHONETIC

A mouth uttering words of approval with a sound like "ding" gives you the character meaning "can" or "able."

• 扌(hand)RADICAL
• 免(avoid; escape)PHONO-SEMANTIC

Using your hand to pull back to escape loss is the action of recovery.

• 囗(outer ring; circumference)RADICAL
• 口(circular shape; ring)ASSOCIATIVE

Nested spirals symbolize the act of returning.