Synonyms:
informally
Meaning: without formality; "he visited us informally"
Usage examples
"And I was looking for you, Bobby," she answered, as informally as if it were only yesterday they had parted, instead of eight months before.
Almost inevitably with travel, with transport communications, with every condition of human convenience insisting upon it, formally or informally a bi-lingual compromise will come into operation, and to my mind at least the chances seem even that French will emerge on the upper hand.