Used to introduce a statement that contrasts with what has just been said, showing that something happens in spite of a previous fact. It is similar to 'however' or 'even so'.
A compound of 'never the less', dating back to Middle English, used as a fixed phrase. Over time, the three words fused into one.
You can think of 'nevertheless' as a verbal U-turn: 'this problem exists; nevertheless, we continue'. Its long, formal sound often marks a shift from difficulty to determination.
Complete word intelligence in one call. Free tier — 50 lookups/day.