What does Aniket mean?
From Sanskrit aniketa (अनिकेत), 'homeless, having no fixed abode', used as an epithet of Shiva (who belongs everywhere and nowhere). The meaning carries an ascetic, all-encompassing sense rather than a negative one.
What does Nirav mean?
From the Sanskrit निरव (nirava), 'soundless, still', formed from nir- ('without') + rava ('sound, noise') — hence tranquil stillness. A genuine, if less common, classical formation.