dour /door or dowˈər/

1. Obstinate, determined
2. Sullen
3. Grim

dourˈly adverb

• illustrates
• illustrating
• illustration
• illustrational
• illustrations
• illustrative
• illustratively
• illustrator
• illustrators
• illustratory
• illustrious
• illustriously
• illustriousness
• illustriousnesses
• illustrissimo
• illuvia
• illuvial
• illuviation
• illuviations
• illuvium
• illuviums
• ill-versed
• ill-will
• ill-wisher
• ill-wishers