Albert Barnes Commentary Daniel 7:20

"and concerning the ten horns that were on its head, and the other [horn] which came up, and before which three fell, even that horn that had eyes, and a mouth that spake great things, whose look was more stout than its fellows." — Daniel 7:20 (ASV)

And of the ten horns ... — See the notes at (Daniel 7:7–8).

Whose look was more stout than his fellows — literally, “whose aspect was greater than that of its companions.” This does not mean that its look or aspect was more fierce or severe than that of the others, but that the appearance of the horn was greater — רב rab.

In (Daniel 7:8), this is described as “little horn;” and to understand this, and reconcile the two, we must suppose that the seer watched this as it grew until it became the largest of the number.

Three fell before it, and it outgrew in size all the others until it became the most prominent. This would clearly denote that the kingdom or the authority referred to by this eleventh horn would be more distinct and prominent than either of the others — would become so conspicuous and important as in fact to concentrate and embody all the power of the beast.