the GNU version of the Collaborative International Dictionary of English
adj. Not having or making pretenses.
The Century Dictionary and Cyclopedia
Destitute of pretense or pretension.
Word Usage
"In the subjoining pages, I offer to the world, a pretenseless record of the impressions, opinions, and convictions which have been, I may say, thrust upon me by a contact, which is yet necessarily limited, with the phases of every-day life."