高不可攀

• 高(tall; high; tower; tall building)ASSOCIATIVE

A tall tower reaching high is drawn with a roof, gate, and stacked foundation layers piled on top of each other.

• 不(no; not; negation)ASSOCIATIVE

A bird flying swiftly upward and never willing to return represents the meaning of swift and unyielding.

• 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."

• 樊(fence; enclosure)PHONETIC
• 手(hand)RADICAL

Use both hands to grip a fence while climbing up high.