If an unpleasant meal has left you feeling grumpy and looking green, you're bilious in several senses of the word. This adjective can mean both "troubled by indigestion" and "irritable," and it can also be used to suggest a sickly green shade.

The wonderfully descriptive word bilious comes from the root bile, which is a foul green fluid made in the liver and stored in the gall bladder — a fact that helps us picture something described as bilious as being really foul. Because of the connection with bile, we often refer to something that's an ugly shade of green as being bilious. Of course, the word can also be more kindly applied to someone who has a liver or gall bladder disorder.

Definitions of bilious
  1. adjective
    relating to or containing bile
    synonyms: biliary
  2. adjective
    suffering from or suggesting a liver disorder or gastric distress
    synonyms: liverish, livery
    ill, sick
    affected by an impairment of normal physical or mental function
  3. adjective
    irritable as if suffering from indigestion
    synonyms: atrabilious, dyspeptic, liverish
    having an irritable and unpleasant disposition
Word Family

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