shrewd

a.明智的；精明的

showbiz, showcase, showdown, shower, shower with, shower-proof, showery, showgirl, showily, showiness, showing, showman, showmanship, shown, showroom, showy, shrank, shrapnel, shred, shrew, shrewdly, shrewdness, shrewish, shrewishly, shrewishness, shriek, shrift, shrike, shrill, shrillness, shrilly, shrimp, shrine, shrink, shrink-wrap, shrinkage, shrive, shrivel, shroud, Shrove Tuesday,