Synonyms for Struggle (same or very similar meaning)
WordNet sense 1 (make a strenuous or labored effort):
fightWordNet sense 2 (climb awkwardly, as if by scrambling):
clamber, scramble, shin, shinny, skin, sputter, shinWordNet sense 3 (be engaged in a fight; carry on a fight):
contendWordNet sense 4 (an open clash between two opposing groups (or individuals)):
battle, conflict, conflictFrom the ODE community, based on WordNetadd/edit