adverb
In a relaxed and informal manner; not showing any seriousness or formality.
She dressed casually for the party, opting for a simple t-shirt and jeans.
Without much thought or consideration; happening by chance.
He casually mentioned his plans for the weekend without realizing I was interested.
In a manner that is not intended to cause concern or alarm.
They casually strolled through the park, enjoying the sunny weather.
Occurring or done without formality or regularity.
They meet casually over coffee to discuss their ideas.