PENETRABLY
Etymology
Adverb
penetrably (comparative more penetrably, superlative most penetrably)
In a penetrable way.
Source: Wiktionary
PENETRABLE
Pen"e*tra*ble, a. Etym: [L. penetrabilus: cf. F. pénétrable.]
Definition: Capable of being penetrated, entered, or pierced. Used also
figuratively.
And pierce his only penetrable part. Dryden.
I am not made of stones, But penetrable to your kind entreats. Shak.
– Pen"e*tra*ble*ness, n.
– Pen"e*tra*bly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition