contentious, quarrelsome :-- Ne beó ðú tó ceástful; of irsunge wyxt seófung, Prov. K. 23. Gálful þing wín, and ceástfull (tumultuosa) druncennyss, Scint. 105, 5.
Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "ceást-full." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 12.