taru-adjective, adverb taking the 'to' particle
brilliant and quick-witted; sparkling with intelligence
Describes a person whose intelligence is lively, sharp, and full of energy. Often used in literary or formal descriptions of someone's mental agility.
His arguments were so brilliant and lively that they overwhelmed the listeners.
The young shogi player produced one sparklingly brilliant move after another.
Standard kanji form. 溌剌 is a somewhat uncommon kanji compound, but this is the established spelling.
Mixed kana spelling used when the kanji 溌剌 are considered difficult or for readability.
Compound of 才気 (intelligence, wit) and 溌剌 (lively, energetic). 溌剌 is a reduplicative compound of 溌 (splash, energetic) and 剌 (oppose, sharp), together conveying a sense of vigorous, sparkling energy.