Be persistent, refuse to stop
English: persevere, persist, hang in, hang on, hold on
Bahasa: bertahan, teguh, berpegang, tekun, gigih, tabah, berkeras, bertekun
bersungguh-sungguhBahasa Indonesia
concentrated, hang in, hang on, hold on, persevere
Verb
Adjective
Completely lacking in playfulness
English: unplayful, serious, sober
Bahasa: serius, sungguh-sungguh, waras
Determined
English: single-minded, resolved
Bahasa: berazam
Less certain link between this word and this sense.
Intensely focused
English: concentrated
Bahasa: padat, pekat, tertumpu
Less certain link between this word and this sense.