いっそう の訳語→ add er even increasingly more
いつしか の訳語→ eventually gradually now place suddenly
きまって の訳語→ always anytime certainly invariably often
とたんに の訳語→ automatically immediately minute noticeably quickly soon when
どうしても の訳語→ absolutely barely definitely desperately inalterably inescapably insist irresistible just most mostly must never obviously quite really simply somehow stubbornly undoubtedly would
案の定 の訳語→ characteristically indeed predictable predictably unsurprisingly
自然 の訳語→ essential natural naturally nature
当然 の訳語→ deserve expectantly fully logical only perfectly proper readily reasonable should understandably
すぐに の訳語→ briefly directly easily fast first forthwith in a bit instantly pronto right straight straightaway swiftly then