Often, persevere in or with or at. persist, resolve, decide, endure, continue, carry on or through, keep at or on or up, be steadfast or staunch or constant, keep going, stand fast or firm, see through, be or remain determined or resolved or resolute or stalwart or purposeful or uncompromising, be tenacious or persistent or constant or pertinacious or assiduous or sedulous, be tireless or untiring or indefatigable, show determination or pluck or grit, be plucky, be patient or diligent or stubborn or inflexible or adamant or obstinate or obdurate, show or exhibit or demonstrate patience or diligence or stubbornness or inflexibility or obstinacy or obduracy, remain dogged, pursue doggedly, be intransigent or intractable, cling to, stick to, support, stop at nothing, sustain, Colloq stick with, stick (it) out: