Meaning : Not suitable for a particular occasion etc.
Example :
Noise seems inappropriate at a time of sadness.
Inappropriate shoes for a walk on the beach.
Put inappropriate pressure on them.
Suitable for a particular person or place or condition etc.
A book not appropriate for children.Meaning : Not in keeping with what is correct or proper.
Example :
Completely inappropriate behavior.
Synonyms : incompatible, out or keeping, unfitting