tarnish
verb /ˈtɑːnɪʃ/
  /ˈtɑːrnɪʃ/
Verb Forms
| present simple I / you / we / they tarnish |    /ˈtɑːnɪʃ/   /ˈtɑːrnɪʃ/  | 
| he / she / it tarnishes |    /ˈtɑːnɪʃɪz/   /ˈtɑːrnɪʃɪz/  | 
| past simple tarnished |    /ˈtɑːnɪʃt/   /ˈtɑːrnɪʃt/  | 
| past participle tarnished |    /ˈtɑːnɪʃt/   /ˈtɑːrnɪʃt/  | 
| -ing form tarnishing |    /ˈtɑːnɪʃɪŋ/   /ˈtɑːrnɪʃɪŋ/  | 
- [intransitive, transitive] if metal tarnishes or something tarnishes it, it no longer looks bright and shiny
- The mirrors had tarnished with age.
 - tarnish something The silver candlesticks were tarnished and dusty.
 
Oxford Collocations Dictionaryadverb- badly
 - slightly
 
 - [transitive, often passive] to damage the good opinion people have of somebody/something synonym taint
- be tarnished Reputations can be easily tarnished.
 - He hopes to improve the newspaper's somewhat tarnished public image.
 
Oxford Collocations Dictionaryadverb- severely
 - slightly
 - somewhat
 - …
 
 
Word Originlate Middle English (as a verb): from French terniss-, lengthened stem of ternir, from terne ‘dark, dull’.