at what age can a baby understand the word "No"?

[peanut4us]

I know she is probably still too little and when I say no, and she actually stops, which is rare, it's probably my tone of voice that she is reacitng to. But for any of you parents with toddlers who understand "no" at what age did you see that comprehension?

[kristine_elen]

Jack will be 1 in two days and he's been understanding "no" at least a month, maybe two -- maybe more? He still ignores me sometimes, but I know he knows it's "no no."

[lisams]

It was about at 9 months. We don't use it a lot, but when we do she knows what it means!!!

Lisa

[egoldber]

I'd say between 8 and 12 months they get it, probably earlier rather than later. But understanding what no means and then consistently stopping the offending behavior, now that's something we still work on... :)

[Momof3Labs]

Yeah, probably around 8-9 months...

[nola]

I would agree with the other posters. When she ignored our no, we would isolate her in her crib for a few minutes. She hated it. It has been worth it because she is good about not touching the things that are off limits.