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

• French letter
• frenetic
• frenulum
• frenzy
• frequency
• frequent
• fresco
• fresh
• freshman
• freshwater
• fret
• fretful
• fretsaw
• fretted
• fretwork
• friable
• friar
• friary
• fricassee
• friction
• Friday
• fridge
• friend
• friendship
• Friesian