Adverb
In an informal manner.
Source: Webster's dictionaryEvery historian has informally an anthropology, without ever using the word. Peter Gay
A good technical writer, trying not to be obvious about it, but says everything twice: formally and informally. Or maybe three times. Donald Knuth
Finding a programmer to work with if you don't already know one will be a challenge. Merely judging if a programmer is exceptional vs. competent will be very hard if you are not one yourself. When you do find someone, work together informally for a while to test your compatibility. Jessica Livingston
Although I do not do any formal teaching.., I am always ready to talk to any students who wish to seek my advice informally... Timothy Barnes (classicist)
this building is colloquially referred to as The Barn Source: Internet
he visited us informally Source: Internet