My 21 month old daughter, Lilly, does not say too many words. She has a total of maybe 10. Some of her most common words are Mama, Dada, yes, Daisy, Sissy, thank you, and this. I am honestly not too worried about it. She babbles all day, just does not say actual words, so we guess at what she is telling us. I talked about language development in toddlers in a previous post, here . I was thinking the other day though, I wonder how much pacifiers do have an affect on this particular developmental milestone. Lilly gets a paci usually only at sleep times. When we are playing in her room, though, she often picks them up and uses them, which I don't stop. Also, we tend to give them to her on car rides as well, to help keep her content.