1
general::
adj. worried about sth VERBS be, feel, look, seem, sound | become, get, grow | remain ADV. deeply, especially, extremely, genuinely, greatly, particularly, really, seriously, very | increasingly | a bit, a little, quite, rather, slightly, somewhat | (not) unduly She was not unduly concerned by the prospect of managing on her own. | naturally | rightly | simply PREP. about/at/by/over Doctors are concerned at the prospect of heart patients having to wait up to a year for surgery. | for We are now deeply concerned for his safety. interested in sth VERBS be ADV. especially, particularly, specifically | entirely, exclusively, solely | centrally, chiefly, essentially, largely, mainly, mostly, predominantly, primarily, principally Mathematics is concerned essentially with understanding abstract concepts. | closely, directly, intimately PREP. with Social anthropology is centrally concerned with the diversity of culture.
Oxford Collocations Dictionary