Definition of thicken verb from the Oxford Advanced Learner's Dictionary

 

thicken

 verb
verb
BrE BrE//ˈθɪkən//
 
; NAmE NAmE//ˈθɪkən//
 
[intransitive, transitive]Verb Forms present simple I / you / we / they thicken
BrE BrE//ˈθɪkən//
 
; NAmE NAmE//ˈθɪkən//
 
he / she / it thickens
BrE BrE//ˈθɪkənz//
 
; NAmE NAmE//ˈθɪkənz//
 
past simple thickened
BrE BrE//ˈθɪkənd//
 
; NAmE NAmE//ˈθɪkənd//
 
past participle thickened
BrE BrE//ˈθɪkənd//
 
; NAmE NAmE//ˈθɪkənd//
 
-ing form thickening
BrE BrE//ˈθɪkənɪŋ//
 
; NAmE NAmE//ˈθɪkənɪŋ//
 
 
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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. The fog had thickened slightly. The gloom gradually thickened. thicken something Thicken the stew with flour.
  • Idioms used to say that a situation is becoming more complicated and difficult to understand
    See the Oxford Advanced American Dictionary entry: thicken