1. (noun) the creation of something in the mind

• conception
• design
• innovation
• invention

1. (noun) thinking something out with care in order to achieve complete understanding of it

• cerebration
• intellection
• mentation
• thinking
• thought
• thought process

2. (noun) the creation of something in the mind

• creative thinking
• creativeness
• creativity

1. (noun) the creation of something in the mind

• concoction
• contrivance

1. (noun) thinking something out with care in order to achieve complete understanding of it

• contrive
• devise
• excogitate
• forge
• formulate
• invent

2. (noun) the creation of something in the mind

• conceive
• conceptualise
• conceptualize
• gestate
• contrive
• contrive
• devise
• devise
• excogitate
• excogitate
• forge
• forge
• formulate
• formulate
• invent
• invent
• contrive
• design
• plan
• project
• design
• plan
• groundbreaking
• innovational
• innovative