See delve in Webster's New World Roget's A-Z Thesaurus II
verb
To go into or through for the purpose of making discoveries or acquiring information:
dig, explore, inquire, investigate, look into, probe, reconnoiter, scout1. See investigateTo break, turn over, or remove (earth or sand, for example) with or as if with a tool:
dig, excavate, grub, scoop, shovel, spade. See enter
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