Hard SAT Words - Group 10

[Esc] (1)
n. sleepwalker; person who walks in his sleep

[Esc] (2)
n. a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return

[Esc] (3)
n. argument for exercise merely; plausible but misleading argument; art or process of reasoning; logic

[Esc] (4)
a. slender and elongated, especially in a way that suggests weakness; disproportionately long and slender or slim

[Esc] (5)
a. twisting about in a wriggling, snakelike motion

[Esc] (6)
n. mark or token of infamy, disgrace, or reproach; small mark or scar

[Esc] (7)
v. divide into classes; form, arrange, or deposit in layers

[Esc] (8)
n. difficult or unusual or dangerous feat; usually done to gain attention

[Esc] (9)
a. high spiritual, moral, or intellectual worth

[Esc] (10)
n. interdependent relationship between groups or species, often mutually beneficial