This wordlist is generally used by students preparing for GRE.
Short Definition : without feeling; lacking sense; foolish
Short Definition : unconscious; unresponsive; insensitive; unaware; imperceptible; Ex. insensible of his danger/to pain; Ex. insensible change; CF. not the opposite of sensible
Short Definition : treacherous; stealthy; sly; working or spreading harmfully in a stealthy manner; Ex. insidious spreading of dry rot
Short Definition : discerning; perceptive
Short Definition : hint; imply; suggest indirectly; creep in; introduce or insert (oneself) by artful means; Ex. insinuate himself into the boss's favor; CF. ingratiate
Short Definition : lacking in flavor; lacking interest; dull; Ex. insipid food/character
Short Definition : impudent disrespect; haughtiness; ADJ. insolent; CF. haughty + rude
Short Definition : bankrupt; lacking money to pay; N. insolvency
Short Definition : wakefulness; inability to sleep
Short Definition : without concern or care; unconcerned; indifferent