whimsical

adjective

whim·si·cal | \ ˈhwim-zi-kəl

, ˈwim-\

Definition of whimsical

1a : resulting from or characterized by whim or caprice especially : lightly fanciful whimsical decorations

b : subject to erratic behavior or unpredictable change

2 : full of, actuated by, or exhibiting whims