じっくり の訳語→ carefully close closely extra fastidiously good long patiently relish seriously smooth thoughtfully
ていねいに の訳語→ accurately courteously laboriously precisely
細かく の訳語→ specifically
丹念に の訳語→ assiduously attentively careful clever dutifully examination faithfully industriously meticulously neatly sedulously thoroughly
着実に の訳語→ methodical steadily surely