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

     

    ebb

     verb
    verb
    BrE BrE//eb//
     
    ; NAmE NAmE//eb//
     
    Verb Forms present simple I / you / we / they ebb
    BrE BrE//eb//
     
    ; NAmE NAmE//eb//
     
    he / she / it ebbs
    BrE BrE//ebz//
     
    ; NAmE NAmE//ebz//
     
    past simple ebbed
    BrE BrE//ebd//
     
    ; NAmE NAmE//ebd//
     
    past participle ebbed
    BrE BrE//ebd//
     
    ; NAmE NAmE//ebd//
     
    -ing form ebbing
    BrE BrE//ˈebɪŋ//
     
    ; NAmE NAmE//ˈebɪŋ//
     
     
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  1. 1[intransitive] (formal) (of the tide in the sea) to move away from the land synonym go out (2) opposite flow
  2. 2[intransitive] ebb (away) to become gradually weaker or less synonym decrease The pain was ebbing. As night fell, our enthusiasm began to ebb away.
  3. Word Origin Old English ebba (noun), ebbian (verb), of West Germanic origin; related to Dutch ebbe (noun), ebben (verb), and ultimately to of which had the primary sense ‘away from’.Extra examples Calla felt her fear slowly ebbing away. He knew that his life was ebbing away. Her strength began to ebb.
See the Oxford Advanced American Dictionary entry: ebb