From Longman Dictionary of Contemporary Englishtroglodytetrog‧lo‧dyte /ˈtrɒɡlədaɪt $ ˈtrɑːɡ-/ noun [countable] SAHBHsomeone who lived in a cave in prehistoric times
Examples from the Corpus
troglodyte• I was two stages below a troglodyte.• They would all be troglodytes before the war was over, thought Lucinda, with eyes that stood out on little stalks.• This scurrying around like troglodytes is enough to depress anyone.Origin troglodyte (1400-1500) Latin troglodytae (plural), from Greek, from trogle “hole, cave” + dyein “to enter” 