beharrlich (bn):
hardnekkig(en) stubbornly persevering, steadfast.
(en) unwilling to yield from a point of view etc; dogged., betrouwbaar(en) able to be depended on., consequent(en) of a regularly occurring, dependable nature., veel voorkomend(en) of a regularly occurring, dependable nature., verbeten(en) stubbornly persevering, steadfast., volhardend(en) refusing to give up.
Via: Dbnary en WikiWoordenboeken
Via: Memodata.com