laggard

详细解释:n. 迟钝者, 落后者
a. 迟钝的, 落后的

词型变化：

副词:laggardly名词:lag-gardness

英语解释：

名词 laggard:

someone who takes more time than necessary; someone who lags behind同义词：dawdler, drone, lagger, trailer, poke