intransitive verb. undefined

intransitive verb. To make dark or darker.

intransitive verb. To give a darker hue to.

intransitive verb. To fill with sadness; make gloomy.

intransitive verb. To render vague or uncertain; obscure.

intransitive verb. To tarnish or stain.

intransitive verb. To become dark or darker.

To grow dark or darker.

To grow less white or clear; assume a darker hue or appearance: as, white paper darkens with age.

To deprive of light; make dark or darker: as, to darken a room by closing the shutters.

To obscure or shut out the light of.

To render less white or clear; impart a darker hue to: as, exposure to the sun darkens the complexion.

To obscure or cloud the meaning or intelligence of; perplex; render vague or uncertain.

To render gloomy; sadden.

To deprive of vision; strike with blindness.

Hence To deprive of intellectual or spiritual light; sink in darkness or ignorance.

To sully; make foul; make less bright or lustrous.

To hide; conceal.

intransitive verb. To grow or darker.

transitive verb. To make dark or black; to deprive of light; to obscure.

transitive verb. To render dim; to deprive of vision.

transitive verb. To cloud, obscure, or perplex; to render less clear or intelligible.

transitive verb. To cast a gloom upon.

transitive verb. To make foul; to sully; to tarnish.

verb. To make dark or darker by reducing light.

verb. To become dark or darker (having less light).

verb. To make dark or darker in colour.

verb. To become dark or darker in colour.

verb. To render gloomy, dark(er) of mood

verb. To become gloomy, dark of mood

verb. To blind, impair eyesight

verb. To be blinded, loose clear vision

verb. become dark or darker

verb. make dark or darker

verb. tarnish or stain

"As Langdon listened to the caller, Hadley watched his expression darken."

depress  sully  to darken one's door  

darkener  

defile  maculate  stain  sully  tarnish  

Markan  barkan  harken  

beadlike  black-barked  broadspreading  dark-stained  defeated  

attaint  bandage  beat down  becloud  bedarken  

darkened  darkening  darkens