access
admission
biting
clear-cut
crisp
cutting
entering
entrance
entree
entry
import
importation
importing
in
inbound
income
incoming
infiltration
inflooding
inflowing
ingress
ingression
ingressive
inner-directed
inpouring
input
insertion
insinuation
intake
interpenetration
introduction
introgression
introversive
introvert
introverted
intrusion
intrusive
invasive
inward
inward-bound
irruptive
leakage
penetrating
penetration
percolation
reception
seepage
subjective
trenchant