A considerable amount of time means a significant or large duration, usually referring to an extended period that is longer than average. Full definition
They spend considerable amount of time with friends than their parents and siblings. (interpersona.psychopen.eu)
If we see price break the $ 10,000 level today, it's going to be a big day and one that many will remember for considerable amount of time to come. (dailybitcoinnews.com)
Students should understand that writing academic papers is not an easy task and hence, require considerable amount of time and effort. (professaywriters.com)