informally
adverbUK /ɪnˈfɔːməli/
US /ɪnˈfɔːrməli/
In a relaxed and friendly way, not in a strict or official way.
She greeted us informally, with a big smile and a wave.
OTHER MEANINGS
2. In a way that is not official or formal.
The two leaders met informally before the big meeting.
3. Using everyday language rather than formal words.
He spoke informally to his friends at the party.
4. In a style that is simple and not fancy.
They dressed informally for the picnic.