Synonyms of 'necessarily'
Spending on health is growing inexorably.
You use naturally to indicate that you think something is very obvious and not at all surprising in the circumstances.
We are naturally concerned about the future.
Perforce is used to indicate that something happens or is the case because it cannot be prevented or avoided.
He had, perforce, to be content with being second.
Video: pronunciation of 'necessarily'
Thesaurus for necessarily from the Collins English Thesaurus
If you say that something is not necessarily the case , you mean that it may not be the case or is not always the case.