I'm actually unable to stand straight due to laughter. OR I'm actually unable to stand straight because of laughing.

  • The "traditionalist" view is that "due" is an adjective only to be used only where "attributable to" would fit syntactically. quickanddirtytips.com/education/grammar/… The linked article also says that "due to" has won some fans (including Fowler) as a "compound preposition. I don't like "because of"; it's ok for for colloquial use, but it jangles (to my ear) in formal writing, I prefer "... because I am laughing so hard." Still, If "because of" isn't a preposition, it ought to be, and so people use it at such. – remarkl Feb 20 '19 at 15:52

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