Formal:
* Ninakukosa: This literally translates to "I am missing you." It's a formal way to say "I miss you."
* Ninakosa: This is a more general way to say "I am missing something/someone" and is a bit more formal than the other options.
Informal:
* Nakukosa: This is a more casual way to say "I am missing you." It's often used with friends and family.
* Nakosa: This is a more general and informal way to say "I am missing something/someone".
For a specific thing:
* Ninakosa [thing]: This translates to "I am missing [thing]". For example, "Ninakosa simu yangu" means "I am missing my phone."
Note: The "ku" prefix in "nakukosa" and "ninakukosa" indicates that you are missing a specific person. You can use the same form with other prefixes to express missing something else, like "Ninakosa chakula" (I am missing food).
It's important to consider the context and your relationship with the person you're talking to when choosing the appropriate phrase.