It's a chilean word, literally means "the vagina of your mother" but in spanish the meaning and the use can vary. The original word it's like a phrase: "concha de tu madre", but it is written that way because of its pronunciation.

You can use it (in an informal space, obviously) when you are surprised, exiting, scared or when you just want to offend someone. So the word can mean "Oh my god" or "motherfucker" depending of the context. Its use is daily in Chile and other countries of Latinoamérica, but the pronuntiation vary depending of the country.
Examples!

"Conchetumare no te puedo creer"----> "Oh my god I can't believe it"
"Conchetumare que lindo"----> "Oh my god it's so cute!"
"Chúpalo conchetumare"----> "Suck it motherfucker"

Search in Youtube "Kirby conchetumare", "Piñera conchetumare te odio hueon" or "Vardoc conchetumare" for learn the pronuntiation :)
by Chispitas October 28, 2020
Get the Conchetumare mug.
chilean word used to make a reference of offending someone else mother. it’s like “motherfucker” in english, it’s an adaptation of “la concha de tu madre” in Argentina.
Conchetumare me trajiste la plata weono?”
by theawesomehawk January 1, 2018
Get the conchetumare mug.
una persona con un IQ muy bajo, ¨ignorante¨ ¨ijueputa¨ïmbecil¨puede tener un nivel de conciencia muy bajo por lo cual no actúa con querencia y puede a enojarse con gran facilidad y expulsar un grito parecido al de un tlacuache.
se le recomienda alejarse de ese tipo de persona por que puede llegar a causar grandes desastres
ey tu ´conchetumare´que haces teniendo relaciones con mi hámster
by mamahuevo May 15, 2020
Get the conchetumare mug.
Used by mostly chileans, it means "The shell (vagina) of your mother." Used as an insult, but the rest of Latin America use it as an exclamation of when something wrong happened.
Minecrafter: "Our minecraft house got griefed"
Other minecrafter: "CONCHETUMARE!"
Get the Conchetumare mug.