Simple past tense and past participle of boulder.(verb)
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Use "bouldered" in a sentence
"I will leave no rock unturned, I will leave no stone untouched, I will leave no pebble un-looked at and I will leave no boulder un-bouldered."
"Back at Palo Duro Canyon, we climbed and bouldered our way up on this cliffside and it was really cool!"
" Where the Vinkus River seeped along flat-bouldered steps into Restwater, they stopped to get their breath, and they surprised a fox out of a clump of wrestlebush."