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

     

    cloud

     verb
    verb
    BrE BrE//klaʊd//
     
    ; NAmE NAmE//klaʊd//
     
    Verb Forms present simple I / you / we / they cloud
    BrE BrE//klaʊd//
     
    ; NAmE NAmE//klaʊd//
     
    he / she / it clouds
    BrE BrE//klaʊdz//
     
    ; NAmE NAmE//klaʊdz//
     
    past simple clouded
    BrE BrE//ˈklaʊdɪd//
     
    ; NAmE NAmE//ˈklaʊdɪd//
     
    past participle clouded
    BrE BrE//ˈklaʊdɪd//
     
    ; NAmE NAmE//ˈklaʊdɪd//
     
    -ing form clouding
    BrE BrE//ˈklaʊdɪŋ//
     
    ; NAmE NAmE//ˈklaʊdɪŋ//
     
    Unhappiness, Fear
     
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  1. 1[transitive] cloud something if something clouds your judgement, memory, etc., it makes it difficult for you to understand or remember something clearly Doubts were beginning to cloud my mind. His judgement was clouded by jealousy.
  2. 2[intransitive, transitive] (formal) (of somebody’s face) to show sadness, fear, anger, etc.; to make somebody look sad, afraid, angry, etc. cloud (over) Her face clouded over with anger. cloud something Suspicion clouded his face. See related entries: Unhappiness, Fear
  3. 3[transitive] cloud the issue to make something you are discussing or considering less clear, especially by introducing subjects that are not connected with it
  4. 4[intransitive] cloud (over) (of the sky) to fill with clouds It was beginning to cloud over.
  5. 5[transitive] cloud something to make something less pleasant or enjoyable His last years were clouded by financial worries.
  6. 6[intransitive, transitive] if glass, water, etc. clouds, or if something clouds it, it becomes less transparent cloud (with something) Her eyes clouded with tears. cloud something Steam had clouded the mirror.
  7. Word Origin Old English clūd ‘mass of rock or earth’; probably related to clot. Sense (1) dates from Middle English.Extra examples Cost factors should not be allowed to cloud the issue. Further clouding the picture is the question of racial discrimination. Her happiness was clouded by having to leave her daughter behind in Jamaica. His last years were clouded by ill health. That day, the skies had clouded and it had become cool. The sky clouded over and it started to rain.
See the Oxford Advanced American Dictionary entry: cloud