परमम्paramamind. yes, very well
indeclinable yes, very well
अक्षरं ब्रह्म परमं स्वभावोऽध्यात्ममुच्यते ।
कोशःDictionaries
Apte, Monier-Williams and Macdonell at once. Type in any of fifteen scripts and schemes; the word is converted and looked up wherever it is part of a headword.