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

• Lexulous
• Wordscraper
• Wordosaur

adj. Received from the original source: firsthand information.

adj. Direct, without intermediate stages.

"Our series gives you the opportunity to gain firsthand knowledge from people of all walks of life on what it means to live -- and live well -- with HIV."

primary   

direct    original   

in-depth    unbiased    cursory    corroborative    anecdotal