Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym QSM? is...

QSM? is

  • Shall I repeat the last message which I sent you?

QSM? is also in:

Acronym Definition Searched: GW EDS 2M WXJ STZ WXVM GM OPS CF 78278 COOK FMD OHL PMC-NWTF PWW