This might be exclave - but if so, this is a really lame definition.
A seven letter word starting with E could be epitome.
tangelo
EndingsErosionEverestErodingElevateEnduresevidentescourtemotionengrossengraveearringexcitedexpiredextremeexpressessence
gaininggallonsgambledgardensgarmentgetawaygatewaygathersgeneralgentilegesturegettingghastlygiraffegirlishglassesglimmerglistenglorifygolfinggoslingglowinggradinggrantedglaringgleefulgloatedgovernsgravitygreatlygrowinggravelygrantedgreetedgravinggriffingrimacegrizzlygrosslygroomedgroomergroovedgrufflygrumblegruntedguessedgunshotguzzledgushinggutting
malaria
alleged
anteing
another archive
gabriea
snapped
silence
screams