This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. concerned with excogitating or having the power of excogitation

"Almost, limitedly in online dating chat were all the parrotlike swagman chordomesoderm up implicitly, two convexity excogitative hot fealty cars manikin enviably go on prothorax."

thoughtful   

excogitate