Bilingual and trilingual kids have a slower language development than others, so this is probably quite normal, but our 14 month old daughter talks a lot but doesn't use any words, not even for mum and dad.
I do understand that "Pappa/Daddy/Tata" is complicated with three different words in the three languages, but "Mommy/Mama/Mamma" shouldn't be a problem. She talks a lot, but just nonsense sounds with the exception for the words "Deh", "Dehdeh" and "Gn" which she uses for everything conveying meaning by pointing (there seems to be no pattern in how she uses these three words, except that she says "Dehdeh" very loudly and with a slight questioning tone when she wonders why mom and dad are outside of direct view.)
She seems quite bright in other things, so it's just the language that trails. So I wonder if there is anything we can do to speed up the language development. I've tried pointing and saying "mamma" and "pappa" and "Elenor" but she only gets that she should point, and will invariably points to herself. :-)
(For the umpteenth time: I'm not worried that anything is wrong. I do not ask if something is wrong, or how to check if something is wrong or what to do when something is wrong).