She says she thinks he was tired of being asked, or might have felt sorry for her.

VOA: special.2010.02.09

It is--at least, it puts itself out there as a candidate to be an alternative term that one might use if one got tired of saying "irony" or "paradox."

如果“讽刺“，“悖论“一类的词,用的太多,可以用“朦胧“来替换“

耶鲁公开课 - 文学理论导论课程节选

You'd be less likely to say "You look tired." or "You look bored." or "You look strange."

但你可能并不会说，“你看起来累极了。”，或者“你看起来很无聊。”，或“你看起来很奇怪。”

You look 课堂 - SpeakingMax英语口语达人

They say it can cause people to feel fatigued or extremely tired.

VOA: special.2011.01.18

If you're tired or stressed out or in a bad mood or, you know, full of rage.

如果你很累、压力很大、心情不好，或是很愤怒的时候，

会打棒球吗？ - SpeakingMax英语口语达人

He or she may begin to feel tired.

VOA: special.2010.02.02

Maybe it was becauseshe had no where else to go, or maybe it was becauseshe was so tired 'cause she went to bedand slept and slept like she hadn't slept in years.

VOA: standard.other