IPA: /ˌsplɛnˈdɪfərəs/
KK: /splɛnˈdɪfərəs/
Extremely impressive or magnificent in appearance or quality.
The splendiferous decorations at the gala left everyone in awe.
Splendiferous → It is formed from "splendid" (from Latin *splendidus*, meaning shining or bright) and "-ferous" (from Latin *ferre*, meaning to bear or carry). The word "splendiferous" means bearing or carrying splendor, or being magnificent and wonderful.
Think of something that 'bears' ('-ferous') 'brightness' or 'shine' ('splendid') — that's why splendiferous means something magnificent.