noun

depth

The distance below a surface, or the extent of something's complexity or intensity.

The lake reaches a depth of thirty feet near shore.

Etymology

Deep supplies the spatial quality, and -th makes a noun for its extent. Depth then extends from distance below a surface to the reach of complexity or feeling.

More examples

  • The report explores the issue in depth.
  • Her letters reveal the depth of her love.
  • These fish live in the ocean's depths.

Forms

depth · depths

deep adjective — Extending far below a surface.

Similar words

distance
Refers to any separation, not specifically how far below.
complexity
Emphasizes interconnected details rather than emotional or intellectual depth.
intensity
Emphasizes strength of feeling rather than distance or complexity.