lacking even the rudiments of courage; abjectly fearful; "the craven fellow turned and ran"; "a craven proposal to raise the white flag"; "this recreant knight"- Spenser
continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature; "the habit of meditation is the basis for all real knowledge"
(religion) contemplation of spiritual matters (usually on religious or philosophical subjects)
giving offense to moral sensibilities and injurious to reputation; "scandalous behavior"; "the wicked rascally shameful conduct of the bankrupt"- Thackeray; "the most shocking book of its time"
characterized by unrest or disorder or insubordination; "effects of the struggle will be violent and disruptive"; "riotous times"; "these troubled areas"; "the tumultuous years of his administration"; "a turbulent and unruly childhood"