noun which may take the genitive case particle 'no'
undiscovered; not yet found; unexplored
Describes something that has not been discovered or found yet, often used in scientific, geographical, or investigative contexts.
その島には未発見の生物がいるかもしれない。
There may be undiscovered creatures on that island.
未発見の資源を求めて探検が続けられている。
Exploration continues in search of undiscovered resources.
未確認 means 'unconfirmed' or 'unidentified', focusing on lack of verification rather than discovery.
Compound of 未 (mi, 'not yet') and 発見 (hakken, 'discovery'). The reading みはっけん follows standard rendaku voicing of はっけん.