IPA(key): [ɡros] <span class="searchmatch">гроз</span> • (groz) f inan pl genitive plural of гроза́ (grozá)...
(grozá) f inan (genitive грозы́, nominative plural гро́зы, genitive plural <span class="searchmatch">гроз</span>, relational adjective грозово́й) thunder, thunderstorm disaster danger, menace...
to create a feminine noun, usually an abstract noun denoting a quality. <span class="searchmatch">гроз</span>- (groz-, “disgusting”) + -ота (-ota) → грозота (grozota, “disgustingness”)...