An inconsequential thing doesn't make a big difference or have much effect. It's something small and not important.
You might use this word to describe things that happen every day, like getting a flat tire on your way to work - it's inconvenient, but it won't ruin your life. Or you could say that a lost sock is inconsequential compared to other problems you're facing at the moment. If someone accidentally spills coffee on their shirt and it gets stained, they might say "Oh well, it's just an inconsequential stain" because it's not going to change anything about their day or life. This word can also be used when discussing opinions or ideas - if someone has a different opinion than you but it doesn't affect the bigger picture, you could call that difference of opinion inconsequential.
Having no consequence; not consequential; of little importance.
Example: You will never know the exact atomic time when you started reading this phrase; of course, that's inconsequential.
