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Pronunciation varies by accent · phrase
(informal, Internet slang, text messaging, chiefly Snapchat) Abbreviation of reply back..
Use rb when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rb means (informal, Internet slang, text messaging, chiefly Snapchat) Abbreviation of reply back..
Common synonyms include rubidium, atomic number 37.
The opposite depends on the specific sense.
Use rb where its definition matches the intended context.
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