What is the meaning of Dis-?

Not, the reverse of. (Especially forming words with a negative connotation)

Alternative form of dys- (“incorrect”)

dys- (bad)

indicates negation

shows separation, dissemination, e.g. semi (“sow”) > dissemi (“disseminate”) ; ŝiri (“tear”) > disŝiri (“tear to pieces”).

as intensifier

Romanization of 𐌳𐌹𐍃-

dis- (“reversal, removal; apart”)

Alternative form of dios-

Forms words denoting reversal or removal; dis-, de-.

Intensifies words with a negative connotation; dis-, de-.

dis- (indicates separation)

dys- (forms the names of conditions characterised by difficult or inadequate function)

dys- (bad or wrong)

intensifying prefix

negative prefix

Source: wiktionary.org

See also