extensively

English

Etymology tree

Proto-Indo-European *h₁éǵʰ

Proto-Indo-European *-s

Proto-Indo-European *h₁éǵʰs

Proto-Italic *eks

Latin ex

Latin ex-

Proto-Indo-European *ten-

Proto-Indo-European *tend-

Proto-Indo-European *-eti

Proto-Indo-European *téndeti

Proto-Italic *tendō

Latin tendō

Latin extendō

Latin extēnsus

Proto-Indo-European *-wós

Proto-Indo-European *-iHwósder.

Latin -īvus

Late Latin extensīvusder.

Middle English extensive

English extensive

Proto-Indo-European *leyg-der.

Proto-Germanic *līkąder.

Proto-Germanic *-līkaz

Proto-Germanic *-ê

Proto-Germanic *-līkê

Proto-West Germanic *-līkē

Old English -līċe

Middle English -ly

English -ly

English extensively

From extensive + -ly.

(Received Pronunciation, Canada) IPA^(key): /ɪkˈstɛn.sɪv.li/
(General American) IPA^(key): /ɪkˈstɛn.sɪv.li/, (rare, maybe erroneous) /ɛkˈstɛn.sɪv.li/
- Audio (Maryland): (file)
(Australia) IPA^(key): /ɪkˈsten.sɪv.li/
(New Zealand) IPA^(key): /əkˈsten.səv.li/

extensively (comparative more extensively, superlative most extensively)

In an extensive manner, widely.
He has read and traveled extensively.
To a great extent.
He became more extensively involved than he intended.
- 2018 August 18, Michael S. Schmidt and Maggie Haberman, “White House Counsel, Don McGahn, Has Cooperated Extensively in Mueller Inquiry”, in The New York Times‎^[1], archived from the original on 3 April 2022:
  The White House counsel, Donald F. McGahn II, has cooperated extensively in the special counsel investigation, sharing detailed accounts about the episodes at the heart of the inquiry into whether President Trump obstructed justice, […]

in an extensive manner; having great range; having wide breadth and depth

to a great extent