noun
1.
Synonyms: spine , back, rachis, spinal column, vertebrae, vertebral column
2.
Synonyms: fortitude , grit, guts, intestinal fortitude, ||moxie, nerve, sand, spunk
Related Word: hardihood; heart
Contrasted words: irresoluteness, irresolution
Antonyms: backbonelessness, spinelessness
3.
Synonyms: mainstay , pillar, sinew(s)