American English

Definition of thicken verb from the Oxford Advanced American Dictionary



[intransitive, transitive]Verb Forms present simple I / you / we / they thicken
he / she / it thickens
past simple thickened
-ing form thickening
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  • to become thicker; to make something thicker Stir until the sauce has thickened. It was a dangerous journey through thickening fog. thicken something Thicken the stew with flour.
  • Idioms
    the plot thickens
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    used to say that a situation is becoming more complicated and difficult to understand
    See the Oxford Advanced Learner's Dictionary entry: thicken