FFS
I can't believe the amount of 'discussion' (read wank) that has suddenly sprung up over the term 'gencest' since the Gencest Bang was recently announced. I've been in the SPN fandom for eight years and counting, and have known the meaning of the term since the beginning.
The definition of "incest" from etymonline: from Latin incestum "unchastity, impious unchastity," also specifically "sexual intercourse between close relatives," noun use of neuter adjective incestus "unchaste, impure," from in- "not" + castus "pure".
The "cest" in "incest" means "chaste" or "pure". Effectively, "cest" = the opposite of "INcest", with "in-" being the prefix that adds the meaning of "not". You wouldn't say that words such as "incomplete", "invisible", "informal," "inefficient", etc, etc mean the same as their antonyms? This is just simple and straightforward grammar that a primary school child would know?
Use a freaking dictionary, people.
The definition of "incest" from etymonline: from Latin incestum "unchastity, impious unchastity," also specifically "sexual intercourse between close relatives," noun use of neuter adjective incestus "unchaste, impure," from in- "not" + castus "pure".
The "cest" in "incest" means "chaste" or "pure". Effectively, "cest" = the opposite of "INcest", with "in-" being the prefix that adds the meaning of "not". You wouldn't say that words such as "incomplete", "invisible", "informal," "inefficient", etc, etc mean the same as their antonyms? This is just simple and straightforward grammar that a primary school child would know?
Use a freaking dictionary, people.