consistent
con-sis-tent
adjective
Always behaving, happening, or performing in the same, reliable, and steady way.
"She maintains a consistent level of effort."
Thesaurus
Synonyms: duplicable, duplicatable, reproducible, conformable, concordant, consonant, reconciled, self-consistent, unchanging, pursuant, accordant, agreeable
Antonyms: incoherent, inconsistent, irreproducible, unreproducible