They were unsuitably dressed for the occasion.

他们的穿着在那种场合很不得体。

《牛津词典》

Moreover, the fitting degree of curvilinear regression equation is tested by correlation index, in stead of correlation coefficient which has been unsuitably used for testing in similar works.

此外，用相关指数来检验曲线回归方程的拟合程度，而不采用在类似的研究中用相关系数来检验曲线回归这一不合适的方法。

youdao

He plays the unsuitably named Craven, a Boston policeman whose daughter (Bojana Novakovic) is murdered on his doorstep.

NEWYORKER: Edge of Darkness

The director general, George Entwistle, has taken responsibility and resigned (though he has also taken an unsuitably large pay-off).

CNN: BBC in crisis: What have we learned?