Archaic adjectival noun describing something visually striking, bright, or clear. Cross-referenced with 灼たか.
See also: あらたか
The expression '灼たなる光' (a brilliant light) appears in old texts.
Archaic use for something that stands out clearly or is unmistakable. No modern productive use.
The phrase '灼たなる証拠' (obvious evidence) remains in classical works.