How do you say had your dinner in Malayalam?

The most direct translation for "had your dinner" in Malayalam would be:

നിങ്ങൾ അത്താഴം കഴിച്ചോ? (ningal athazham kazhicho?)

This literally translates to "Did you eat dinner?". To emphasize that they have already eaten, you could use:

നിങ്ങൾ അത്താഴം കഴിച്ചു കഴിഞ്ഞോ? (ningal athazham kazhichu kazhinjo?)

This translates to "Did you finish eating dinner?".

You can also say:

അത്താഴം കഴിച്ചു കഴിഞ്ഞോ? (athaazham kazhichu kazhinjo?)

This translates to "Did you finish eating dinner?". This version is more casual and direct.

Remember, depending on the context and your relationship with the person you're talking to, you can use a more formal or informal phrasing.