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
sincerity 0861 ** aphthrsia ** immortality, incorruption, {sincerity}.
sincerity 1103 ** gnesios ** own, {sincerity}, true.
sincerity 1505 ** eilikrineia ** {sincerity}.