doubtful

Word parts

doubt + -ful

Pronunciation

• IPA ^(key): /ˈdaʊtfəl/

• Audio (US)

  (file)

• Hyphenation: doubt‧ful

Adjective

Positive doubtful

Comparative more doubtful

Superlative most doubtful

1. If something is doubtful it is probably not true.
   • Synonym: dubious

   The fool made many doubtful claims.

2. If someone is doubtful they are doubting something or someone.

   The teacher was doubtful of his bad students.