As though the situation is normal and not unusual; not dramatically or fancifully.(adverb)
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Use "matter-of-factly" in a sentence
"He matter-of-factly explained that he was homeless and that he would have to call me back."
""I have a prehensile tongue," he said matter-of-factly."
"Just before she left for college, Maddy informed him matter-of-factly that they had better break things off now, so neither of them would feel guilty about seeing other people, and she had been surprised and uncomprehending when her sensible proposal upset him."