let down

Verb

• fail to meet the hopes or expectations of
  • Her boyfriend let her down when he did not propose marriage
    

• move something or somebody to a lower position
  • take down the vase from the shelf
    

Related words

• Synonyms: 
  disappoint , lower , take down , get down , bring down
• Antonyms: 
  raise , lift , elevate , get up , bring up