The short form is "mersi" for "thanks" we would use "multumesc" in the case of " thank you "
Mulțumesc and mersi are the same thing. It depends on who you are talking to, you cannot tell your teacher ”mersi” xD
'mersi' is literally taken from french. we don't use 'merci' because we have come to write it as we say it. that is pretty much our language
Am incercat mai multe variante pentru „thanks” - mi-a acceptat „mersi” si „merci”, dar nu si cuvantul cu adevarat romanesc „multumesc”. Cu siguranta aceasta traducere a realizat-o un vorbitor de franceza.