Idealess

i·de·a  (-d)

n.

1. Something, such as a thought or conception, that potentially or actually exists in the mind as a product of mental activity.

2. An opinion, conviction, or principle: has some strange political ideas.

3. A plan, scheme, or method.

4. The gist of a specific situation; significance: The idea is to finish the project under budget.

5. A notion; a fancy.

6. Music A theme or motif.

7. Philosophy

a. In the philosophy of Plato, an archetype of which a corresponding being in phenomenal reality is an imperfect replica.

b. In the philosophy of Kant, a concept of reason that is transcendent but nonempirical.

c. In the philosophy of Hegel, absolute truth; the complete and ultimate product of reason.

8. Obsolete A mental image of something remembered.

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[Middle English, from Latin, from Greek; see weid- in Indo-European roots.]

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i·dea·less adj.

Synonyms: idea, thought, notion, concept, conception
These nouns refer to what is formed or represented in the mind as the product of mental activity. Idea has the widest range: "Human history is in essence a history of ideas" H.G. Wells.
Thought is distinctively intellectual and stresses contemplation and reasoning: "Language is the dress of thought" Samuel Johnson.
Notion often refers to a vague, general, or even fanciful idea: "She certainly has some notion of drawing" Rudyard Kipling.
Concept and conception are applied to mental formulations on a broad scale: You seem to have absolutely no concept of time. "Every succeeding scientific discovery makes greater nonsense of old-time conceptions of sovereignty" Anthony Eden.