"Serious dedication" refers to the strong commitment, focus, and effort put towards achieving a particular goal or undertaking a task. It implies a sincere and persistent approach towards something important. Full definition
That type of performance takes serious dedication to the sport and to yourself and for a person to be able to achieve that, they need a serious amount of self control and commitment. (turbobulk.com)
Keeping him at OLB will mean very serious dedication to get his stamina up to NFL levels. (sbnation.com)
Cougar dating doesn't demand serious dedication as both of the individuals can enjoy a little flirting and romantic gestures which could spark that chemistry between the two. (freecougardatingsites.com)