いつも (translations)→ abiding absolutely all always constant constantly ever evermore every exclusively forever generally invariable invariably long never normally other perpetually rarely regularly religiously routinely so sometimes steady strictly throughout traditionally unwavering used usual wholly
しつこい (translations)→ heavy stubborn stubbornly such tiresome unwanted
たえず (translations)→ ceaselessly continually endless endlessly incessantly permanently
四六時中 (translations)→ full-time
年がら年じゅう (translations)→ perennially
濃い (translations)→ close dark deep dense full heavily highly shaggy
しょっちゅう (translations)→ everlasting every so often frequent many often periodically relentlessly repeatedly use