Formally means in an official, proper, or ceremonial way that follows established rules or customs. When a principal formally announces that school is canceled due to snow, she makes an official statement through the proper channels, like the school's announcement system or an official email. When someone is formally invited to a wedding, they receive a proper written invitation in the mail.

The word suggests doing something according to the right procedures and protocols. A student council might formally vote on a new rule by taking a count and recording the results, following their established process. A scientist formally presents her research by publishing it in a journal where other experts can review it, adhering to the scientific community's standards.

Formally often implies seriousness and respect for proper procedure. If you want to formally complain about something at school, you might need to write a letter or fill out a form, following the official complaint process. The opposite of formally is informally, which means in a casual, relaxed way without strict rules.

The word also relates to formal events like weddings or award ceremonies, where people dress up and follow traditional customs. At a formal dinner, you might face an intimidating array of forks and spoons, each with its proper use.