🔼The name Jattir in the Bible
There's only one city named Jattir in the Bible. It was a city that was situated in hill country of the tribe of Judah (Joshua 15:48; here spelled יתיר but יתר everywhere else), which was later given to the Kohathite Levites (Joshua 21:14). Much later, Jattir was among the towns to which David sent portions of the spoils that he had taken from the Amalekite raiding party that had previously sacked Ziklag (1 Samuel 30:27).
🔼Etymology of the name Jattir
The name Jattir comes from the verb יתר (yatar) meaning to remain over, be a rest:
For a meaning of the name Jattir, NOBSE Study Bible Name List reads Preeminence and Jones' Dictionary of Old Testament Proper Names has Pre-eminent or Lofty. BDB Theological Dictionary doesn't interpret our name and deems the root dubious. It's highly unlikely that anyone from a Hebrew audience would share BDB's dubiety, and not without further ado assume a firm and obvious connection between our name and the verb יתר (yatar).