By serendipity; by blind luck in combination with wisdom; by fortunate accident.(adverb)
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Use "serendipitously" in a sentence
"On the way there, we stopped in a little town called Mariposa, which, serendipitously, is Spanish, for butterfly."
"I can't help but be reminded of this scene from the April 20, 2000 episode of The West Wing, titled serendipitously, perhaps, "Let Bartlet Be Bartlet.""
"It all kind of serendipitously fell into place about two weeks ago when my super sexy ex-therapist called me in consternation because her digital scale was defectively not displaying the right number - at least not the one she was expecting to read."