in a very correct way that is suitable for official or important occasions

officially; in a way that follows an agreed or official way of doing things

The accounts were formally approved by the board.

through lessons, exams, etc. received in a school, college or university rather than just through practical experience

Although not formally trained as an art historian, he is widely respected for his knowledge of the period.

in the way that something appears or is presented

Formally, the distinction between town and country workers was clear, but in practice there was some overlap.

in a regular manner, according to a clear, exact plan

The gardens were formally arranged.

LEARNit Dictionary