bonnie adjective 3noun 1forms 5 adjective3 •(Scotland) pretty or beautiful to look atO once I lov'd a bonnie lass, / Aye, and I love her still — 1774 •(Scotland) Fine, good (often used ironically).My bonnie friend, come over here. •Merry; happy.Be you blithe and bonny Converting all your sounds of woe Into Hey nonny, nonny. — 1598 noun1 •(Northern-Ireland, informal) A bonfire; chiefly one several storeys tall and burned to celebrate Eleventh Night. formsbonnies · bonnier · more bonnie · bonniest · most bonnie