true

adjective:in accordance with fact or reality; not false or erroneous
- It is true that the Earth orbits the sun.
adjective:faithful or loyal to a person, cause, or belief
- He remained a true friend through all the difficulties.
adjective:accurately conforming to a standard, pattern, or original
- The artist created a true likeness of the subject.
adjective:genuine; not counterfeit or artificial
- She wore a necklace made of true pearls.
verb:to bring a tool, wheel, or other object into the correct or desired position or alignment
- The mechanic had to true the bicycle wheel after the accident.