S: (n) plan, program, programme (a series of steps to be carried out or goals to be accomplished) "they drew up a six-step plan"; "they discussed plans for a new bond issue"
S: (n) figment (a contrived or fantastic idea) "a figment of the imagination"
S: (n) suggestion (an idea that is suggested) "the picnic was her suggestion"
S: (n) impression, feeling, belief, notion, opinion (a vague idea in which some confidence is placed) "his impression of her was favorable"; "what are your feelings about the crisis?"; "it strengthened my belief in his sincerity"; "I had a feeling that she was lying"
S: (n) reaction (an idea evoked by some experience) "his reaction to the news was to start planning what to do"
S: (n) theorem (an idea accepted as a demonstrable truth)
S: (n) notion, whim, whimsy, whimsey (an odd or fanciful or capricious idea) "the theatrical notion of disguise is associated with disaster in his stories"; "he had a whimsy about flying to the moon"; "whimsy can be humorous to someone with time to enjoy it"
S: (n) meaning, substance (the idea that is intended) "What is the meaning of this proverb?"
S: (n) burden (the central idea that is expanded in a document or discourse)
S: (n) theme, motif (a unifying idea that is a recurrent element in literary or artistic work) "it was the usual `boy gets girl' theme"
S: (n) ideal (the idea of something that is perfect; something that one hopes to attain)
S: (n) hobby, hobbyhorse, rocking horse (a child's plaything consisting of an imitation horse mounted on rockers; the child straddles it and pretends to ride)