apprehensive russian

• трусли́вый

  cowardly, faint-hearted, timid, apprehensive

• опаса́ющийся

  fearing, apprehensive, wary, afraid (of)

• поба́ивающийся

  a bit afraid, somewhat fearful, rather timid, rather apprehensive

• трусливо

  apprehensively

  cowardly

• опа́сливо

  apprehensively, fearfully, warily, timidly, cautiously