undergo：遭受(苦难)，承受，经历

词根词缀：under-在下,不足 +go走→在(重压等)之下走过

• invocation
• invoice
• invoke
• involuntary
• involve
• involved
• involvement
• invulnerable
• inward
• inwardly
• punishment
• punitive
• Punjabi
• punk
• punky
• punnet
• punster
• punt
• punter
• puny
• pup
• pupa
• pupate
• pupil
• pupilage