Here's a list of uncircumcised things in the Bible

Uncircumcised lips

Moses had uncircumcised lips

And Moses spake before the LORD, saying, Behold, the children of Israel have not hearkened unto me; how then shall Pharaoh hear me, who am of uncircumcised lips? Exodus 6:12

And Moses said before the LORD, Behold, I am of uncircumcised lips, and how shall Pharaoh hearken unto me? Exodus 6:302

Fruit trees that are less than three years old are uncircumcised

And when ye shall come into the land, and shall have planted all manner of trees for food, then ye shall count the fruit thereof as uncircumcised: three years shall it be as uncircumcised unto you: it shall not be eaten of. them: I am the LORD. Leviticus 19:23

Hearts are often uncircumcised

And that I also have walked contrary unto them, and have brought them into the land of their enemies; if then their uncircumcised hearts be humbled, and they then accept of the punishment of their iniquity. Leviticus 26:41

All the house of Israel are uncircumcised in the heart. Jeremiah 9:26

Ye have brought into my sanctuary strangers, uncircumcised in heart. Ezekiel 44:7

No stranger, uncircumcised in heart, nor uncircumcised in flesh, shall enter into my sanctuary. Ezekiel 44:9

Ye stiffnecked and uncircumcised in heart.... Acts 7:51

Ears can be uncircumcised too

To whom shall I speak, and give warning, that they may hear? behold, their ear is uncircumcised, and they cannot hearken: behold, the word of the LORD is unto them a reproach; they have no delight in it. Jeremiah 6:10

Ye stiffnecked and uncircumcised in ... ears.... Acts 7:51