trivial

adjective

1. Of little value or importance; not serious or significant.

   B1
   • "Don't waste time on trivial matters."B1
   • "The differences between the two plans are relatively trivial."B2
   • "Her complaint may seem trivial, but it reflects a deeper issue."C1

2. Easily solved or understood; simple and straightforward.

   B2

   often used in mathematics or computing

   • "The proof is trivial once you understand the theorem."B2
   • "Debugging this code is trivial if you follow the steps."C1

3. not important or serious; small and easy to deal with

   B1
   • "It seemed like a trivial problem at first."A2
   • "The mistake was trivial and easy to fix."B1
   • "They argued over a trivial detail that did not matter."B2

4. simple and requiring very little effort or thought

   B2
   • "This is a trivial task for an experienced engineer."B1
   • "The answer is trivial if you know the formula."B2
   • "What looks trivial at first can hide a deeper problem."C1