dependably
Definitions
In a manner that is trustworthy and reliable.
In a way that consistently performs or functions as expected.
Examples
The old clock has worked dependably for over fifty years.
She can always be counted on to perform her duties dependably, regardless of the circumstances.
Synonyms
reliably consistently trustworthily steadfastly faithfully predictably surely
Antonyms
unreliably inconsistently erratically unpredictably capriciously fitfully unsteadily