いつでも (translations)→ always anytime consistently constantly frequently invariably just never readily
しっかりと (translations)→ bravely close determinedly fastly firmly jealously right robust solid solidly tight tightly
ずっと (translations)→ absurdly all considerably ever far fine long lot more much nonstop rest surely totally very way well whole
たえず (translations)→ ceaselessly constant continually endless endlessly forever incessantly perpetual
永続的に (translations)→ durably enduringly