1. extremely well; in an excellent manner
Usage: informal
2. to an extreme degree; extraordinarily
3. in an imaginative or unrealistic way

Examples

• The team played fantastically in the championship game.
• She did fantastically well on her final exams.
• The house was fantastically expensive for such a small space.
• The movie was fantastically popular with audiences worldwide.
• He told fantastically elaborate stories about his adventures.
• The garden was fantastically beautiful in the spring.
• The novel describes a fantastically complex alien civilization.