relentlessly
Definitions
In a way that is harsh, unyielding, or without compassion.
In a persistent, continuous, or non-stop manner.
Examples
The rain poured down relentlessly throughout the entire night, flooding the streets.
She worked relentlessly to finish the project before the deadline.
Synonyms
persistently ceaselessly unremittingly doggedly incessantly tirelessly steadfastly
Antonyms
intermittently sporadically occasionally fitfully haltingly infrequently erratically