索さく然ぜんさくぜんMeanings1taru-adjective, adverb taking the 'to' particleboring; dull; dryformal or literaryFormal or literary term describing a situation, speech, or writing that lacks interest or excitement. Often used in the adverbial form 索然として.彼かれの講こう演えんは索さく然ぜんとして、聴ちょう衆しゅうの多おおくが居い眠ねむりを始はじめた。His lecture was so dull that many in the audience started dozing off.その小しょう説せつの結けつ末まつは索さく然ぜんたるものだった。The ending of that novel was dry and uninspiring.