unsoundness

Từ điển Oxford Advanced Learner 8th

un·sound·ness BrE [ˌʌnˈsaʊndnəs] ; NAmE [ˌʌnˈsaʊndnəs] noun uncountable
Main entry: ↑unsound_derived

• Từ trái nghĩa / Antonyms:
  firmness, soundness, wisdom, wiseness