-some
suff 後缀
1 (with ns and vs forming adjs 与名词和动词构成形容词) producing; likely to 引起...的; 有...倾向的: fearsome
quarrelsome * meddlesome.
2 (with numbers forming ns 与数词构成名词) group of the specified number 某数目的一组: threesome.
People who work in offices are frequently referred to as white-collar workers' for the simple reason that they usually wear a collar and tie to go to work.