Her sorrow felt unfathomable, a depth no comforting words could reach.

She stared at the night sky in awe, struck by the unfathomableness of the universe.

We lowered the rope into the unfathomed well and waited, unsure what would emerge.

He was unfathomably calm even as the ship listed and the storm raged around them.

Her silence revealed the unfathomability of her grief.

The scientist stood at the edge of the abyss, unfathoming the mysteries that had eluded generations.

Despite the detailed explanation, his unfathoming expression made it clear he hadn't grasped the idea.

She tried to unfathom the stranger's motives, but they slipped from her grasp like shifting sand.

The historian unfathoms long-buried truths about the city by piecing together old letters and maps.