Wiktionary
incrementally
adv. In an incremental fashion; in small increments.
Usage examples of "incrementally".
There was no record of her existence in the well-enumerated society of Verite, and the safest way to create her identity, he judged, would be incrementally, over a period of time, a stroke here, a stroke there, a small retroactive datum every now and then.
Her ignorance existed solely in the plans that were slowly, incrementally settling into place to achieve her own demise.