"rightfully worried" is a perfectly acceptable phrase in written English.
You can use it whenever you want to indicate that someone is feeling a justified level of worry, typically in response to a certain situation. For example, "The students were rightfully worried about the upcoming exam."
"Parents today are rightfully worried about their children being abducted or abused, even in their own neighborhoods," O'Reilly writes in "The No Spin Zone," his 2001 book.
Because we tended to get lost we rightfully worried about getting lost and, taking this logic one step further, assumed we would get lost.
I've spoken with doctors in California, Colorado and South Dakota who are rightfully worried that these initiatives will prevent them from helping their patients make a thoughtful, private decision about pregnancy.
"Graduates are rightfully worried about their future," Sorana Vieru, NUS vice-president for Higher Education, "not only in terms of finding a graduate job but also in how their finances will be affected by larger debts that the majority will be repaying until they are in their 50s".
The detection of the virus in wild birds across Europe is certainly a cause for concern, particularly to Europe's poultry farmers, who are rightfully worried that the presence of the virus in wild birds will increase the risk to their flocks.
The U.S. is rightfully worried about its deficit, but at the end of 2010 it is estimated to be around 65% of the economy–somewhat more manageable than Jamaica's.
These tattoos reflect a growing culture of glamorising self-harm, a common phenomenon on microblogging sites like Tumblr and Reddit and cause for growing concern among some psychiatrists, who rightfully worry about its contribution to the 70 per cent rise in the number of reported cases of self-harm in British 10 to 14 year-olds over the past two years.
Because parents rightfully worry about the safety of cars driven by their children, who are still new to driving, we made safety as big a consideration as any in forming this list.
The yield curve inversion, the only meaningful effect of the Feds current campaign that we can find, rightfully worries many because they have preceded every recession since 1950 with only two fake signals.
At a time when people in England are rightfully worrying about the normalisation of far-right rhetoric, one only has to look to Northern Ireland to see where that takes you.
The Denver Post is an outfit that likes to think of itself as standing up for everyday people, who rightfully worry about the ways the rich take advantage of tax loopholes to get richer, while most people are left treading water and wishing politicians would stand up for them.
