also: むへんざい
Literary or philosophical term for something without limits or boundaries; rarely used in everyday speech.
His imagination is boundless.
I contemplate the infinite expanse of the universe.
Literary kanji compound; the reading むへんさい is standard, while むへんざい is a less common variant.
Variant reading; むへんさい is more common.
Compound of 無 (without) + 辺際 (boundary, limit). The exact historical derivation is uncertain; the word is a literary coinage likely influenced by Buddhist or philosophical texts.