The phrase "without apparent reason" is correct and commonly used in written English.
It is typically used to describe an action, decision, or situation that seems to have no logical or understandable explanation. Example: The company suddenly decided to lay off several employees without apparent reason, causing confusion and anger among the remaining staff.
Temperatures will go up or down from year to year without apparent reason.
Neighborhoods go from fancy to industrial to shabby without apparent reason, and you can't predict what the next corner will be.
This is a world in which omens -- especially the doings of giant eagles -- must be taken seriously, since fate lifts up and then crushes the ambitious without apparent reason.
Silverfish and Dryfeld, for example, pop up sporadically throughout the book without apparent reason, while the promising strand dealing with Prudence's murder -- which might have been staged by Kaporal -- is left unresolved.
The assailant, Ronni Kachanes, who had been invited to the Holtzberg home for dinner and attacked Mr. Holtzberg there without apparent reason, was later sentenced to life, court records show.
Attacks may come and go without apparent reason, but there are a number of precipitating factors, including acute infection, emotional upset, excessive alcohol consumption, poor diet, obesity, diuresis, surgery, trauma, and the administration of certain medications.
In our study, we found that bronchial bacterial infection is common in persistent preschool wheezers without apparent reasons for impaired mucociliary clearance, and that H.influenzae was the predominant aerobic pathogen isolated, followed by S. pneumoniae and M. catarrhalis.
Finally, there are cases of spontaneous regression of NHL without apparent reasons, which could be explained by immune control (Abe et al. 2007; Cole 1974; Engel and Lee 2009; Iwatani et al. 2011; Watari et al. 2005).
But it is also important to realize that depression can take hold of a person without any apparent reason.
Some people are so lucky that they seem blessed, but sometimes their universe collapses in such a way that they lose everything overnight, without any apparent reason.
Acting without any apparent reason, the police said, he stabbed or slashed five people in less than 10 minutes, an outburst of violence all the more terrifying for its randomness.
