Synonyms for hydra

Noun

1. Hydra, mythical monster, mythical creature

usage: (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones; "Hydra was slain by Hercules"

2. Hydra, Snake, constellation

usage: a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer

3. hydra, trouble, problem

usage: trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality; "we may be facing a hydra that defies any easy solution"

4. hydra, hydrozoan, hydroid

usage: small tubular solitary freshwater hydrozoan polyp