'less sharper' is not correct and not usable in written English.
The correct expression would be 'less sharp'. For example, "He was less sharp than usual in the debate."
Its booths are awash in upscale, masculine, nostalgic furniture and accessories — less Sharper Image, more Lord Grantham's study in "Downton Abbey" — with provenances ranging from Pennsylvania to Paris, Los Angeles to London, northern Italy to the Brooklyn Navy Yard.
Overhead of FMAC also increases rapidly, but as it does not possess any special packet, the increase is much less sharper.
The backs were less sharp.
The fall was only marginally less sharp in Arizona.
Reasonable, though much less sharp than Fox's Ice Age.
Making the turns less sharp further reduced the complication.
But beyond them, the Tory team is mostly less sharp, and less enamoured of Cameroonian conservatism.
It's less clever-clever than Fantastic Playroom but no less sharp.
In Lan's copy, the letters were "less sharp and blobbier".
As more women went out to work, discrimination became less sharp.
