You searched for: “formerly
formally, formerly
formally (FOR muhl ee) (adverb)
1. Pertaining to how something is done according to etiquette or to convention for a ceremony, or in regards to behavior or dress codes: The new president of the university was formally installed last week.
2. Concerning following or being in accord with accepted forms, codes of conduct, or regulations: Lenora dressed quite formally which was required for the international convention.
formerly (FOR mur lee) (adverb)
Previously; in earlier times; before: Formerly it was considered dangerous to breathe the air at night.

Formerly the ritual of installing a new president at the university was a very informal affair; however, now that the president is installed formally, everyone is dressing formally for the occasion.