そろそろ第４版を買わなくちゃ...。
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mediocre / deficiency / bear up / lapse into / recoup
1) to remain as cheerful as possible during a difficult time
2) not very good; of only average standard
3) to get back an amount of money that you have spent or lost
4) the state of not having, or not having enough of, something that is essential
5) to gradually pass into a worse or less active state or condition
↓
1) bear up
2) mediocre
3) recoup
4) deficiency
5) lapse into
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