Parashas Toldos · Passuk 26:21
They dug another well, and they quarreled over that also; so he named it Sitnah.
Rashi on Bereishis 26:21 (classical source on this passuk; not listed as a numbered Torah Temimah unit here).
Lemma / focus: שטנה.
English: Sitnah — language of harm and hindrance.
Derash on the verse (Rashi) — not a formal named middah of the 13: the name is fixed as “hindrance.”
The second well was named Sitnah because they contested it as well—hostility and hindrance.