Home › Words › O › outbulkoutbulkoutbulk means to exceed in bulk.EtymologyFrom out- + bulk.verbTo exceed in bulk.e.g.“In places the intrusions, indeed, outbulk the rocks among which they have been thrust.” — 1890, The Quarterly Journal of the Geological Society of London:Definitions & examples from Wiktionary (CC BY-SA 3.0).