unimpeachable

From Wiktionary

Word parts[change]

un- + impeachable

Pronunciation[change]

  • IPA (key): /ˌʌnɪmˈpiːtʃəbl/
  • (file)

Adjective[change]

Positive
unimpeachable

Comparative
more unimpeachable

Superlative
most unimpeachable

  1. If something is unimpeachable, it cannot be doubted or questioned.