Definify.com
Webster 1913 Edition
Insinuating
In-sin′u-aˊting
,Adj.
 Winding, creeping, or flowing in, quietly or stealthily; suggesting; winning favor and confidence insensibly. 
Milton.
 His address was courteous, and even 
insinuating
. Prescott.
Webster 1828 Edition
Insinuating
INSIN'UATING
,ppr.
  1.
  Tending to enter gently; insensibly winning favor and confidence.