Synonyms of surprising

2 Syllables
puzzling, startling, abrupt, striking, shocking, sudden, chance, stunning
3 Syllables
unwonted, amazing, astounding, fortuitous, stupendous, gilt-edged, mind-boggling, wonderful, marvelous, unusual, uncommon
4 Syllables
impulsive, unpredicted, accidental, astonishing, electrifying, unforeseen, remarkable
5 Syllables
unordinary, unpredictable, unimagined, extraordinary
6 Syllables
unanticipated