Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun water_bug

2 senses of water bug

Sense 1
water bug -- (a true bug: large aquatic bug adapted to living in or on the surface of water)
       => heteropterous insect -- (true bugs: insects whose forewings are membranous but have leathery tips)

Sense 2
German cockroach, Croton bug, crotonbug, water bug, Blattella germanica -- (small light-brown cockroach brought to United States from Europe; a common household pest)
       => cockroach, roach -- (any of numerous chiefly nocturnal insects; some are domestic pests)