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1.
a word used to describe someone who is telling the truth, opposite of cb
you better be truthin
by jeff cocksmers December 03, 2006
 
2.
the act of spreading truth (truth movement)

spreading the truth of the new world order, 9/11 truth, and such
i heard this guy truthin to his friend about how 9/11 was an inside job
by trutherforlife June 03, 2011