The phrase "assiduous about" is correct and commonly used in written English.
It means being diligent, careful, and thorough in one's efforts or work. Example: She was always assiduous about her studies, spending hours in the library and taking detailed notes to ensure good grades.
"It could be that banks have been really assiduous about own risk portfolios," Professor Talley said.
Its citizens can live and work across the EU, and it is assiduous about implementing directives from Brussels.
And we could acknowledge the value of limits and begin to get more assiduous about birth control and consumption.
The Dickmans became assiduous about seeking out writing mentors, among them Dorianne Laux, whom they first met in the late nineties.
I think it would be disrespectful to reproduce elements that were written collectively, so I've been assiduous about de-Soul-Coughing-ifying these versions.
The British and Argentinians are particularly assiduous about putting on deodorant, says Unilever, which makes the stuff; but Asians, including the Japanese, far less so.
Though Aldini knew that his proposal seemed farfetched to some, it had not come about without assiduous study and experimentation.
Others worry about his assiduous courtship of the news media.
Moreover, microscopic observation is a laborious process, requiring about 10 minutes for extrusion of the abdomen to obtain the sample, mounting the plate and scanning per insect, so that a diligent and assiduous worker can assay about 50 specimens per day whilst incurring eyestrain and back pain.
And few bands have profited from this network as spectacularly as Hawthorne Heights, an energetic and assiduous group from Ohio, which has sold about 800,000 copies of its 2004 debut album, "The Silence in Black and White".
It's a dealers' destination that many of the most assiduous market fanatics know nothing about (including me, until very recently).
