underground

相关单词

同义词

quietly, privately, secretly, secret, chamber, inside, cabinet, sub, metro, subway,

近义词

buried, secret

反义词

overground, 地上的

临近词

underlie, undergraduate, undergrounder, underground dam, underground law, underground gas, Underground car, underground box, underground air, underground ice, underground way, underground bin

相似词

undergird, undergo, undergrad, undergraduate, undergrowth, underhand, underlay, underlie, 返回 underground