The phrase "a while to clear" is correct and usable in written English.
It can be used to indicate that something will take a certain amount of time to become clear or understandable.
Example: "It may take a while to clear up the confusion surrounding the new policy changes."
Alternatives: "some time to clarify" or "a bit of time to resolve".
It took a while to clear my head, settle down, get organized in my brain.
Some stocks have taken a while to clear the auction, but this is a case of bargain hunters clamouring to get in.
It's taken a while to clear up, I tore a bit of my hip flexor and was struggling to get it right.
It may take a while to clear the cards.
The capillaries removed by your laser or IPL treatment will never return, but if your skin is especially prone to getting broken capillaries, you may have to get laser treatments every once in a while to clear things up.
A glut in solar panels has driven down prices, and the oversupply may take a while to clear, according to industry executives.
Swatch has been making mechanicals for a while, to be clear, but this is the first time they've reduced the price, manufacturing cost, and maintained quality in this way.
Macron has created a political movement called "En Marche!" during the presidential campaign and "La République En Marche!" after his victory to bring together his supporters, and yet he took a while to develop a clear strategy for vetting and promoting candidates to compete in the legislative elections that follow closely on the heels of the presidential contest.
"After all those shitty articles and sterile comments I read online about my work, it took me a while to get my thoughts clear," he tells The Creators Project.
The first evacuation was not without difficulties: Ambulances carrying wounded civilians out of eastern Aleppo on Thursday morning came under fire from government forces, rescuers said, with at least one emergency aid worker reportedly shot by a sniper while trying to clear a path for the convoy.
Michael Pyke died after an accident with his chainsaw while trying to clear a fallen tree in Ballybrado, Tipperary.
