1The redoubtable scientist spent her career studying the mysteries of dark matter, earning numerous accolades along the way.
2His redoubtable skills on the chessboard earned him a spot in the national championships.
3The ancient fortress stood as a redoubtable testament to the ingenuity and craftsmanship of the long-lost civilization that built it.
4Despite being a relatively new player in the market, the company's redoubtable marketing strategy quickly gained them a significant share of customers.
5The redoubtable leader's unwavering dedication to the cause inspired a generation of activists to follow in her footsteps.