Sometimes means on certain occasions but not always. If you sometimes bring your lunch to school, you do it on some days but not every day. If it sometimes rains in April, rain happens during that month but not constantly.

The word helps us talk about things that happen irregularly or unpredictably. Your best friend might sometimes be grumpy in the morning, your dad might sometimes let you stay up late on weekends, or you might sometimes forget to make your bed. None of these things happen all the time, and none of them never happen. They fall somewhere in between.

Sometimes is useful for being honest without making absolute statements. If someone asks whether you like Brussels sprouts, saying “sometimes” is more accurate than “always” or “never” if your feelings depend on how they're cooked or what mood you're in. The word acknowledges that life isn't black and white: circumstances change, moods shift, and what's true today might not be true tomorrow.