strive    gukobeza, gushīshikara, guharanira
(~ after) gukovya
(~ and crowd together) kuvurungana
En-En dictionary 
guharanira (-haraniye)   v    to strive for
together    hamwe
(all) icārimwe
(living) umubāno
(all speaking) imvugarimwe
(with) kumwe
(sticking) akaramata
(trees grown very close ~) impatane
(to be) kumana
(to bring) gukoranya, gutēranya
(to come, as crowd) gukungēra
(to come all ~, suddenly, as at call of trouble) kurandamuka
(to crowd ~) kwegerana
(to get close) kwegerana
(to go ~ to see something, of many people) gukōndōrera
(to live) kubāna
(to live, be always) kwāmana
(to meet) gukorana, gutērana
(to cause to meet) gukoranya, gutēranya, guhūza
(to put) kwegeraniriza, guhūza
(to put things or people close ~) kwegeranya
(to spend time) kumarana
(to stick, vi) gufatana, kumata
(to stick, vt) gufatanya, kumatanya
(to strive and crowd) kuvurungana
En-En dictionary 
kuvurungana (-vurunganye)   v    to make a lot of noise, to strive and crowd together
gukovya (-kobeje)     v    to hurry, persist, be energetic, strive after
gukobeza (-kobeje)     v    to strive, persist more strongly than before
gushīshikara (-shīshikaye)     v    1. to strive, 2. persist, persevere