deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE
An /avyaya "unchanging" (aka indeclinable) is any /pada that is neither a /tiGanta nor a /subanta.
Examples:
/ca "and"
**samyak सम्यक् "completely"
Some words (like **sAkSAt साक्षात् or **pratiloma प्रतिलोम) are is considered to be indeclinable, iso the fact they clearly have a /sup.