matter-of-factly

adverb2

1. •
   As though stating a fact.

   • "I took the liberty of inviting somebody else to have dinner with us," Stallman said, matter-of-factly, giving me the same cat-like smile he gave me back in that Palo Alto restaurant. — 2002
2. •
   As though the situation is normal and not unusual; not dramatically or fancifully.

   • He was not of the East; and he came of a breed who fought devils and wizards as promptly and matter-of-factly as they battled human foes. — 1934