English Theasurus that shows all the ways the English word is translated from the original Greek and Hebrew.
English Theasurus from the Hebrew and Greek Strong's Dictionary
gainsay 0471 ** antepo ** {gainsay}, say against.
gainsay 0483 ** antilego ** answer again, contradict, deny, {gainsay}(-er), speakagainst.
gainsaying 0369 ** anantirrhetos ** without {gainsaying}.
gainsaying 0485 ** antilogia ** contradiction, {gainsaying}, strife.