"anxious sentiment" is correct and usable in written English.
You can use it to describe an emotion of being anxious or feeling fear. For example, "After hearing the news, I felt an anxious sentiment wash over me."
They are nervous about Islamic anger and equally anxious about anti-Muslim sentiment spilling out of control.
I need to know," tweets one anxious student, sharing a sentiment that's spreading across the social media on the various hashtags dedicated to next Thursday.
Given the escalating violence in the Middle East, the rise in street protests here and several possibly anti-Semitic incidents across the city in recent days, it was enough to prompt a round-the-clock presence by the police, and sentiments both anxious and mournful by worshipers.
Yeasayer's third album is an anxious record – both in its sentiments (Reagan's Skeleton cautions against the "sentimental violence" and "Don't fear the red eyes/ Fear the satellites overhead") and in its sonic restlessness.
He added: Market sentiment remains fragile and anxious at best with traders transfixed with developments in the Ukraine.
The images mount up – snowy streets, anxious horses – as a voiceover intones unrelated sentiments.
With nationalism and anti-establishment, anti-immigrant sentiment spreading across Western Europe, the EU leadership in Brussels is anxious to avoid encouraging others in the 28-member bloc to bolt.
The stranger is fidgety and anxious, and at first Changez's elaborate self-justifications for his contentious sentiments begin to suggest that perhaps he is a more sinister figure than he allows.
While fans were initially anxious about a big studio tinkering with characters associated with the classic film, moviegoer sentiment appears to have shifted.
The party, a swirl of color, music and sentiment, observed with an eye for telling details of behavior, sets the tone — exuberant, dignified, a little bit anxious — for what is to follow.
