Slightly large; a little on the large side — used to describe sizes or amounts that are somewhat bigger than usual.
このシャツは大きめを買ったほうが楽だ。
It's more comfortable to buy this shirt one size up.
いつもより大きめのカップでコーヒーを入れた。
I brewed coffee in a slightly larger cup than usual.
靴は少し大きめに作られているので、試着してから買ってください。
The shoes are made slightly large, so please try them on before buying.