1. In a manner that is not appropriate, fitting, or suitable for a particular purpose, occasion, or person
He was unsuitably dressed for the formal dinner in his casual jeans.
Ele estava inadequadamente vestido para o jantar formal em seus jeans casual.
2. In a way that does not match or correspond well with something else
The bright colors were unsuitably chosen for a funeral service.
As cores brilhantes foram escolhidas inadequadamente para um serviço fúnebre.