This wordlist is generally used by students preparing for GRE.
Short Definition : words formed in imitation of natural sounds
Short Definition : vicious assault; fierce attack; Ex. unexpected onslaught of the enemy
Short Definition : burden; responsibility
Short Definition : (of a thick liquid) pass or flow slowly; N: mud or thick liquid as at the bottom of a river
Short Definition : iridescent; lustrous; like an opal; N. opalescence
Short Definition : dark; not transparent; N. opacity
Short Definition : medicine to induce sleep or deaden pain; something that relieves emotions or causes inaction; sleep-producing drug containing opium
Short Definition : timely; well-chosen
Short Definition : individual who sacrifices principles for expediency by taking advantage of circumstances; N. opportunism
Short Definition : infamy; disgrace arising from shameful conduct; vilification(slander); scorn; contempt; Ex. opprobrium hurled against him; ADJ. opprobrious: expressing contempt; shameful or infamous