Satcitananda
Satchitananda (IAST: Satcitānanda) or Sacchidananda representing "existence, consciousness, and bliss" or "truth, consciousness, bliss", is an epithet and description for the subjective experience of the ultimate, unchanging reality in Hinduism called Brahman.
Etymology
Satchitananda (Sanskrit: सच्चिदानन्द) is a compounded Sanskrit word consisting of "sat", "cit" and "ananda", all three considered as inseparable from the nature of ultimate reality called Brahman in Hinduism. The different forms of spelling is driven by euphonic (sandhi) rules of Sanskrit, useful in different contexts.
sat (सत्): The term can have meanings, such as that "which never changes", the "Truth", or the "Absolute Being". According to Monier Monier-Williams, sat means "being, existing", "living, lasting, enduring", "real, actual", "true, good, right", "beautiful, wise, venerable, honest", or "that which really is, existence, essence, true being, really existent, good, true".
cit (चित्): translates to "consciousness" and also "to perceive, fix mind on", "to understand, comprehend, know", "to form an idea in the mind, be conscious of, think, reflect upon".