Adverb
Without design; accidentally; fortuitously; by chance; occasionally.
Source: Webster's dictionaryPeople who are more than casually interested in computers should have at least some idea of what the underlying hardware is like. Otherwise the programs they write will be pretty weird. Donald Knuth
We treat sex so casually and use it for everything but what it is-which is ultimately making another human being with thoughts and feelings and rights. Lisa Kudrow
Values are not trendy items that are casually traded in. Ellen Goodman
There are those who regard this history of past strife and exile as better forgotten. But, to use the phrase of Yeats, let us not casually reduce "that great past to a trouble of fools." For we need not feel the bitterness of the past to discover its meaning for the present and the future. John F. Kennedy
Linux evolved in a completely different way. From nearly the beginning, it was rather casually hacked on by huge numbers of volunteers coordinating only through the Internet. Eric S. Raymond
I did not look for her, because I was afraid of dispelling the mystery we attach to people whom we know only casually. Colette