Where does “הִסְתַּדֵּר” come from?

הִסְתַּדֵּר (Hebrew) comes from Hebrew ס־ד־ר.

Ancestry of “הִסְתַּדֵּר”, step by step

Step	Language	Word	Meaning
1	Hebrew	ס־ד־ר	—

הִסְתַּדֵּר — Etymology, Origin & Word History | Etymology Explorer