“If it suits you” in Japanese
Short answer
If it suits you in Japanese is “何だったら” (nandattara). Full meaning: if you are so inclined, if it suits you, if you like.
Other ways to say “If it suits you” in Japanese
何なら
nannara if you like, if you prefer, if it suits you, if it's fine with you, if you don't mind, if necessary; if ... doesn't suit you, if you don't like ..., if ... doesn't take your fancy; what's more, furthermore
何でしたら
nandeshitara if you like, if you prefer, if it suits you, if it's fine with you, if you don't mind, if necessary
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