Underbrow

//ˈʌndə(ɹ)ˌbɹaʊ// adj, adv, noun

adj, adv, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The portion of the face below the eyebrow and above the eyelid.

    "The Friar's eyes now seemed to burn no more with light, but looked out stern beneath his underbrow's concave; his voice was grave; he stood erect as if to soar above his natural height:"

  2. 2
    The lower portion of the eyebrow.

    "Her big eyes are framed with brows that are almost bushy— the top part of the brow is left alone, only the underbrow is tweezed to give the brow an "angle.""

Adjective
  1. 1
    With the brow lowered. not-comparable

    "Black eyebrows and eyes so dark and scrutinizing (but he was being scrutinized too) as to give the face a sinister expression, especially through a sly underbrow manner of switching the eyes from one object to another."

Adverb
  1. 1
    From beneath a lowered brow. not-comparable

    "He looked underbrow at me."

Example

More examples

"The Friar's eyes now seemed to burn no more with light, but looked out stern beneath his underbrow's concave; his voice was grave; he stood erect as if to soar above his natural height:"

Etymology

From under + brow.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.