STEADFAST, STEADFASTLY
ADJECTIVES
..888 ► FASTREDE steadfast, firm in purpose, inflexible → obs.
1887 ► SARTAIN steadfast, stern, severe → Eng. dial.
1942 ► DYED IN THE WOOL steadfast in principle → Amer. sl. (Bk.)
ADVERBS
1175 ► FASTLY steadfastly; firmly, unwaveringly; with confidence → obs.
1325 ► FAITHLY steadfastly; with fidelity; faithfully, loyally, truthfully → obs.
NOUNS
1340 ► BELEAVING remaining steadfast; endurance, perseverance → obs.
Lexicophilia 