Sure why not.
His determination, focus, and unyielding work ethic contributed to his success. The word unyielding is an adjective. The word firm is a synonym.
the pioneers faced the challenge of settling the frontier with unyielding courage
The math quiz was very unyielding, granting Adam an F.
farenhithet
You could use fixed, rigid, solid, stiff, or tough as a synonym for unyielding.
The three parts of the word "unyielding" are "un-", "yield", and "-ing". "Un-" is a prefix indicating negation, "yield" means to give way or surrender, and "-ing" is a suffix indicating the present participle form of a verb. Therefore, "unyielding" means refusing to give way or surrender, stubborn, or steadfast.
Persistent, unyielding, inexorable, insistent
un-yield-ing
"un" "yield" "ing"
inflexible, unyielding, rigid, brittle
inflexible,unyielding, unalterable, obstinate, stubborn, pigheaded, adamant, immovable, stiff-necked, unyielding, implacable, mulish, unbending close-minded,unreceptive, stiff-boned
stiff, tight, rigid, close, flexed, firm, tense, unyielding