Inofficially vs. Unofficially

Inofficiallyadverb

Without the usual formalities, or not in the official character.

Unofficiallyadverb

In a way that is not official.

Inofficiallyadverb

Without the usual forms, or not in the official character; unofficially.

Unofficiallyadverb

without official authorization;

‘he had made some money on the side’;

Unofficiallyadverb

not in an official capacity;

‘unofficially, he serves as the treasurer’;