あいまいに (translations)→ indistinct inscrutable non-committally noncommittally tentatively uncertainly unconvincingly vaguely
いぶかしげに (translations)→ incredulous quizzically suspiciously
おそるおそる (translations)→ anxiously apprehensively cautiously fearfully gingerly nervously reluctantly slowly timidly
けげんそうに (translations)→ curiously dubiously puzzle quizzical