12-Letter Words Ending: TIAL

• Governed by expediency; seeking advantage.

• relating to or resulting from experience

• derived from experience or the experience of existence

• relating to or showing a difference

• involving or containing one or more derivatives

• the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

• a quality that differentiates between similar things

• a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves

• entrusted with private information and the confidence of another

• (of information) given in confidence or in secret

• denoting confidence or intimacy

• the level of official classification for documents next above restricted and below secret; available only to persons authorized to see documents so classified

• relating to or characteristic of providence

• peculiarly fortunate or appropriate; as if by divine intervention

• resulting from divine providence

• manifesting partiality

• relating to a president or presidency

• befitting a president

• likely to spread and cause an epidemic disease