seemly /ˈsiːmli/adjective 1adverb 1forms 4 adjective1 •Of behavior, appropriate; suited to the occasion or purpose; becoming.His behavior was seemly, as befits a gentleman. adverb1 •Appropriately, fittingly.The great earthes wombe they open to the sky, / And with sad Cypresse seemely it embraue [...]. — 1590 formsmore seemly · seemlier · most seemly · seemliest