not suitable or appropriate in a particular situation inappropriate behaviour/language inappropriate (for somebody/something) (to do something) It would be inappropriate for me to comment. inappropriate to/for something clothes inappropriate to the occasion opposite appropriateExtra examples The existing library is totally inappropriate to our needs. The size of the machines makes them inappropriate for domestic use. This treatment was highly inappropriate in her case. Your bright red coat would be quite inappropriate for a funeral. His clothes were inappropriate for the occasion. It would be inappropriate for me to comment on what your tutor said. What’s the best way for a teacher to deal with inappropriate behaviour?