What does the cryptic crossword clue "Supremo jittery, hiding display of feeling (5)" mean?

The definition is "display of feeling". The wordplay uses a hidden word. Hidden in "suprEMO JIttery, hiding display of feeling" The answer is EMOJI.

Supremo jittery, hiding display of feeling (5)

Guardian Cryptic #29107 | 10 Across | 2023-06-27 flower