landslide /ˈlæn(d).slaɪd/noun 2verb 1forms 3phrases 1 noun2 •A natural disaster that involves the breakup and downhill flow of rock, mud, water and anything caught in the path. •A vote won by a wide or overwhelming majority.The candidate won at 61% to 39%, which most people are calling a landslide. verb1 •To undergo a landslide.So it landslid mightily, carrying off greens and fairways and all. — 1921 formslandslid · landsliding · landslides Phrases with landslide by a landslideWith big margins, with a huge difference.