fundið

In a sentence

• Ég hef fundið lykilinn.

  I have found the key.

  Here, 'fundið' is the neuter past participle form of 'finna', meaning 'to find', and indicates a completed action.

• Þetta er eitt af fyndnustu grínatriðunum sem ég hef fundið.

  This is one of the funniest jokes I have found.

  In this sentence, 'fundið' retains its function as the past participle of 'finna', now referring to the discovery of something humorous.

• Það hefur verið fundið upp nýtt tæki.

  A new device has been invented.

  Here, 'fundið' is used in the context of 'finna upp', meaning 'to invent', and describes the creation of something new.