Idc means I don't care. It is alike idk but they have two very different meanings. Actually, somebody could say idk and idc which is common also.

Shorthand form for "I Don't Care".

Acronym for "I don't care." Extremely bitchy because it implies that the person doesn't even care enough to type three words.

"I don't care".

this means they really care on the inside but they don't want to admit because they're too stubborn and afraid of being wrong.

its ok tho we know you hurting bud :)

Acronym for: I don't care