Unsurpassable, complete, perfect enlightenment; unsurpassable, right, and full enlightenment.
Enlightenment in Buddhism - The English term enlightenment is the western translation of the term bodhi, "awakening", which has entered the Western world via the 19th century translations of Max Müller. It has the western connotation of a sudden insight into a transcendental truth.
The term is also being used to translate several other Buddhist terms and concepts used to denote insight (prajna, kensho and satori); knowledge (vidhya); the "blowing out" (Nirvana) of disturbing emotions and desires and the subsequent freedom or release (vimutti); and the attainment of Buddhahood, as exemplified by Gautama Buddha.
What exactly constituted the Buddha's awakening is unknown. It may probably have involved the knowledge that liberation was attained by the combination of mindfulness and dhyāna, applied to the understanding of the arising and ceasing of craving. The relation between dhyana and insight is a core problem in the study of Buddhism, and is one of the fundamentals of Buddhist practice.
In the western world the concept of (spiritual) enlightenment has taken on a romantic meaning. It has become synonymous with self-realization and the true self, being regarded as a substantial essence being covered over by social conditioning.