- apparition
- boutade
- brainchild
- brainstorm
- bubble
- capriccio
- caprice
- chimera
- conceit
- concupiscence
- craze
- creativity
- crotchet
- curiosity
- daydream
- delirium
- desideration
- dream
- drive
- eagerness
- eidolon
- envisioning
- fable
- fad
- fancy
- fantasque
- fantastic notion
- fantasy
- figment
- flimflam
- fool notion
- freak
- freakish inspiration
- fumes of fancy
- hallucination
- harebrained idea
- hope
- horme
- humor
- idle fancy
- illusion
- image
- imagery
- imagination
- imaginativeness
- imagining
- insubstantial image
- intellectual curiosity
- invention
- kink
- libido
- maggot
- make-believe
- megrim
- mind
- myth
- need
- nightmare
- notion
- passing fancy
- passion
- phantasm
- phantom
- pleasure
- pleasure principle
- quirk
- romance
- sexual desire
- shape
- sick fancy
- thick-coming fancies
- thirst for knowledge
- trip
- urge
- vagary
- want
- wanting
- whim
- whimsy
- whim-wham
- will and pleasure
- wish
- wish fulfillment