Adjective: redoubtable ri'daw-tu-bul- Worthy of respect or honour
"born of a redoubtable family"
- Inspiring fear
"a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic";
- formidable, unnerving, doubtable [archaic]
See also: alarming, reputable
Encyclopedia: Redoubtable