|Noah Webster's Dictionary|
1. (a.) Rendering action or motion difficult or toilsome; serving to obstruct or hinder; burdensome; clogging.
2. (a.) Giving trouble; vexatious.
Cumbrous (2 Occurrences)
Matthew 23:4 Heavy and cumbrous burdens they bind together and load men's shoulders with them, while as for themselves, not with one finger do they choose to lift them. (WEY)
Luke 11:46 "Alas too for you expounders of the Law!" replied Jesus, "for you load men with cumbrous burdens which you yourselves will not touch with one of your fingers. (WEY)