1. in a way that causes worry or anxiety; in a manner that raises concern
Usage: common in modern usage, especially in news and academic contexts

Examples

• The patient's symptoms have been concerningly similar to those of a serious illness.
• Test scores have dropped concerningly over the past year.
• The number of endangered species is concerningly high.
• She spoke concerningly about the state of the environment.
• The infection spread concerningly fast through the community.
• His behavior has become concerningly erratic.
• Concerningly, few young people are interested in voting.