adverb سَرسَختانه / sarsaxtâne

IPA: /særsæxtɒːne/

سرسختانه به سمت اهدافشون حرکت میکنن

sarsaxtâne be samt-e ahdâfešun harekat mikonan

They tenaciously move towards their goals.

Wiktionary

dogged, doggedly, hard-bitten, hard-line, headstrong, intransigent, obdurately, pertinaciously, stubbornly, vigorous