Multilingualism is not my strong suite. I only know one main language and parts of another
I am the same way, I think the official definition you have to be able to speak more then 1 language fluantly
It amazes me anyone that knows more than 2 languages well
Multilingualism
Multilingualism is the use of more than one language, either by an individual speaker or by a group of speakers. It is believed that multilingual speakers outnumber monolingual speakers in the world's population. More than half of all Europeans claim to speak at least one language other than their mother tongue; but many read and write in one language. Always useful to traders, multilingualism is advantageous for people wanting to participate in globalization and cultural openness. Owing to the ease of access to information facilitated by the Internet, individuals
at giving Russian and other minority languages (if in a region the percentage of a national minority exceeded 10%) the status of regional language. About her own attitude toward the Ukrainian language, Tymoshenko has stated that "today I am thinking in Ukrainian... and the fact that I know Russian very well, I think it is not a secret for you... you all know that I was brought up in the Russian speaking region in Dnipropetrovsk, to my mind, I spared no effort to speak Ukrainian as soon as possible