Is "yuchy" the same as repeatative use of no?

I say yucky. I consider it rather polite to warn someone that what they are putting in their mouth will taste horrible or possible harm them! Its different than issue a negative command. Its more like curtesy.

I have a friend who hates the word "yucky" and doesn't want her children to use the word when referring to food they don't like. So instead, she says "Blech" when the kids are putting dirt or paper in their mouths. So, now her kids say, "blech" when they don't like their dinner. :

I don't personally mind my kids using the word.

Thanks for the response! Makes sense to me.

I say, the more accurate, the better. We used a lot of "stop" (stop that action, instead of no, don't do that) and my friend recently said "ucky" to my dd who was gone NUTS with "ucky" - everything is "ucky." Also, if you use "stop" and sign language with a baby you will have a toddler who very forcefully says, "BOP!" and sticks up her hand. LOL! But she gets her point across and we can usually find out what's bugging her (i.e., someone in her space) vs. a more generalized "no".