Questions & Answers about Это пустяк, не стоит спорить.
Russian often leaves out the verb to be in the present tense.
So:
- Это пустяк = This is a trifle / It’s nothing / It’s no big deal
- literally: This — a trifle
In past or future, Russian does use forms of to be:
- Это был пустяк = It was nothing
- Это будет пустяк = It will be nothing / It will be easy
So the missing is here is completely normal.
Это here means this, that, or very often just it, depending on context.
In sentences like this, это is commonly used very broadly:
- Это хорошо = That’s good / It’s good
- Это проблема = That’s a problem / It’s a problem
- Это пустяк = It’s nothing / That’s trivial
So even though это literally points to something, in English we often translate it as it.