ecchira-occhira
Moving forward with great effort, usually carrying something heavy or climbing a steep path. Emphasizes the struggle.
💡Climbing a steep mountain trail with a heavy pack — 'We trudged ecchira-occhira up the slope.'
重い荷物を持ってえっちらおっちらと坂を上った。
Carrying heavy luggage, I trudged ecchira-occhira up the hill.
The hikers ___ made their way up the mountain with full packs.
登山者たちは荷物を背負って○○と山を登った。