INTERCHANGEABLY
interchangeably
(adverb) in an interchangeable manner; “these terms can be used interchangeably”
Source: WordNet® 3.1
Etymology
Adverb
interchangeably (not comparable)
With the ability of being interchanged or swapped.
Source: Wiktionary
INTERCHANGEABLE
In`ter*change"a*ble, a. Etym: [Cf. OF. entrechangeable.]
1. Admitting of exchange or mutual substitution. "Interchangeable
warrants." Bacon.
2. Following each other in alternate succession; as, the four
interchangeable seasons. Holder.
– In`ter*change"a*ble*ness, n.
– In`ter*change"a*bly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition