极严谨的，拘泥的

I just wish he were a litlle less tight-assed about things.

我只希望他态度能稍许变通一些

小气的，吝啬的

Don' t be tight-assed. Give the man five dollars for a cup of coffee.

别一毛不拔了。 给那人五块钱让他喝杯咖啡。