keep up Synonyms

maintain prolong keep abreast preserve sustain conserve follow press on stand up hang on care for follow through memorialise carry on persist in carry through stay on go on uphold upbear hold on carry-forward press on with persevere with keep on with stay with persist with keep pace with not stop keep at shore up prop up hold up keep pace run on keep on keep going mothball underset underpin linger lengthen last keep insist hold extend eternize eternalize endure