guts (n.)
- abdomen
- anus
- appendix
- backbone
- being
- bite
- bones
- bosom
- bottom
- bowels
- brain
- breast
- briskness
- cecum
- census
- chutzpah
- colon
- composition
- content
- contents
- courage
- decisiveness
- drive
- duodenum
- effectiveness
- elements
- endocardium
- endurance
- energy
- entrails
- esprit
- force
- forcefulness
- fortitude
- gameness
- giblets
- ginger
- gizzard
- grit
- gutsiness
- hardiness
- heart
- heartiness
- heartstrings
- hindgut
- hotness
- impressiveness
- incisiveness
- index
- innards
- intestine
- inventory
- items
- jejunum
- kick
- kidney
- list
- liveliness
- liver
- lung
- lustiness
- mettle
- mettlesomeness
- might
- mightiness
- moxie
- nerve
- nervousness
- nip
- obstinacy
- part
- parts
- pepperiness
- perineum
- pith
- pluck
- pluckiness
- poignancy
- potency
- power
- powerfulness
- pump
- punch
- pylorus
- raciness
- rectum
- relish
- robustness
- ruggedness
- sinew
- snap
- soul
- spice
- spiciness
- spirit
- spleen
- spunk
- stalwartness
- stamina
- stomach
- stoutness
- strength
- sturdiness
- tang
- tanginess
- ticker
- toughness
- trenchancy
- tripes
- vigor
- viscera
- vitality
- vitals
- whole
- works
- zest
- zestfulness
- zip