Definitions:

1. To climb or move in a difficult, awkward, or laborious way, usually using both hands and feet. VERB
   • The hikers clambered up the rocky slope.
2. To scramble or climb with effort, often on something steep, rough, or hard to navigate. VERB
   • She clambered over the fence to retrieve the ball.

Synonyms:

• climb awkwardly
• Crawl
• hoist oneself
• scale
• scramble