Nirvāṇa:

As the unaccented Vedic compound ‘nirvana’ (“nir-” + “vana”) literally means ‘having no wood’⁽⁰¹⁾ (‘nir-’, for ‘nis-’ before vowels and soft consonants, is privative⁽⁰²⁾ and ‘vana’ = “forest”, “wood”, “timber”; hence ‘without wood’, ‘woodless’, ‘unwooded’; ergo ‘without fuel’, ‘fuelless’, ‘unfuelled’), then an ancient etymological basis for the accented ‘nirvāṇa’/ ‘nibbāna’ being defined as the cessation of attraction, aversion & confusion—i.e., the ‘going-out’ of the fires of rāga/ lobha & dosa & moha due to the absence of fuel with the extinguishment of the worldly intoxicants (‘intoxicated with life’) [“kāmāsava & bhavāsava & diṭṭhāsava”] upon the ending of agnosis [“avijjā”] a.k.a. metempirical nescience—can also be traced. It is of assistance in comprehending why the five *fuelled* components constituting personage (i.e., “panc’upādāna-kkhandhā”) are referred to as the five *unfuelled* components constituting personage (i.e., “panc’anupādāna-kkhandhā”) upon awakening/ enlightenment.

⁽⁰¹⁾nirvana (mfn.): having no wood, being out of a wood or in the open country (cf. -vaṇa)⁽*⁾. ~ (ᴍᴍᴡ-sᴇᴅ).

⁽*⁾vana: a forest, wood, grove, thicket (in older language also applied to a single tree); wood, timber; vanā (f.): the piece of wood used for kindling fire by attrition. ~ (ᴍᴍᴡ-sᴇᴅ).

⁽⁰²⁾nir, for nis (q.v.)⁽⁰³⁾. ~ (ᴍᴍᴡ-sᴇᴅ).

⁽⁰³⁾nis: without, destitute of, free from, ‘un-’; cf. nir-artha⁽⁰⁴⁾, nir-mala⁽⁰⁵⁾, &c., before vowels and soft consonants. ~ (ᴍᴍᴡ-sᴇᴅ).

⁽⁰⁴⁾nir-artha: void of wealth, poor. ~ (ᴍᴍᴡ-sᴇᴅ).

⁽⁰⁵⁾nir-mala: spotless, unsullied, clean, pure, shining, resplendent, bright; sinless, virtuous; stainlessness, cleanness, purity. ~ (ᴍᴍᴡ-sᴇᴅ).