IPA: /sɛnˈseɪʃənəli/
KK: /sɛnˈseɪʃənəli/
In a way that causes great excitement or interest.
The movie was sensationally good, leaving the audience in awe.
Sensationally → It is formed from "sensational" (from Latin "sensatio" meaning feeling or perception, combined with the suffix "-al" meaning pertaining to) and the adverbial suffix "-ly" (meaning in a manner of). The word "sensationally" means in a manner that causes strong feelings or excitement.
Think of 'sensation' which relates to strong feelings, and remember that 'sensationally' describes doing something in a way that evokes those strong feelings.