1 -- "forsake" and "leave" are the two I can think of right now.
2, 3, 4 -- Yes, all mean approximately the same thing. #4 is probably the most commonly used of the three.
1. He isn't the man to *desert* me.
(What other verbs can we use instead of 'desert'?
2. The new coach is teaching students in a calm manner.
3. The new coach is teaching students in a calm way.
4. The new coach is teaching students calmly.
(Are the three sentences the same? Which is commonly used, 'manner' or 'way'?)
2 answers
1 -- abandon, forsake