透とう徹てつしたじ字FuriganaMeanings1noun-modifying (irregular)clear; lucid; penetratingDescribes thinking, analysis, or insight that is sharp, thorough, and free of ambiguity. Often used in formal or literary contexts.彼かれの透とう徹てつした分ぶん析せきは問もん題だいの本ほん質しつを明あきらかにした。His penetrating analysis revealed the essence of the problem.透とう徹てつした論ろん理りで反はん論ろんを退しりぞけた。She refuted the counterargument with lucid logic.