Where does “తప్పనిసరి” come from?

తప్పనిసరి (Telugu) comes from Telugu సరి, from Sanskrit सदृश — like, similar to, resembling.

తప్పనిసరి (Telugu): unavoidable, inevitable

Definitions

తప్పనిసరి traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Telugu	సరి	similarity, likeness
2	Sanskrit	सदृश	like, similar to, resembling

Step	Language	Word	Meaning
1	Telugu	తప్ప	save, but, except, unless, without
2	Telugu	తప్పు	An error, fault, mistake, offence; To err, fail,...