An unfair action or situation is not right or fair.
例句
She was awarded £5,000 in compensation for unfair dismissal...她获判5,000英镑，作为遭到无理解雇的补偿。America decided that imported steel had an unfair advantage over steel made at home...美国认定进口钢铁相对于国产钢铁具有不公平的优势。
ADJ-GRADED
（制度或情形）不公平的，不平等的
An unfair system or situation does not give equal treatment or equal opportunities to everyone involved.
例句
The American plane makers continue to accuse Airbus of unfair competition...美国飞机制造商继续指控空中客车公司不正当竞争。Some have been sentenced to long prison terms after unfair trials.有些人被冤判长期徒刑。