untruly

It is said, perhaps untruly, that his remonstrance to the Prince against his remaining here has been ungentlemanlike and indecent.

She dreads a mistake, and is afraid that in speaking too quickly she may speak untruly.

If anyone says I have come here to question you without good grounds for it, that person speaks untruly.

It was given out, and not perhaps altogether untruly, that she was leaving India for the benefit of her health.

In his journal he wrote proudly, but not untruly: "I have built me a monument stronger than brass."