1) Oily 2) Snide 
• (p. pr. & vb. n.) of Insinuate • (a.) Winding, creeping, or flowing in, quietly or stealthily; suggesting; winning favor and confidence insensibly.
In·sin'u·a`ting adjective Winding, creeping, or flowing in, quietly or stealthily; suggesting; winning favor and confidence insensibly. Milton. « His address was courteous, and even insinuating .» Prescott. 
insinuating 1. Provoking gradual doubt or suspicion; suggestive: 'She made insinuating remarks about the speaker.' 2. Artfully contrived to gain favor or confidence; ingratiating. 3. Tending to enter gently; insensibly winning favor and confidence.
tending to instill doubts, distrust, etc.; suggestive: an insinuating letter. · gaining favor or winning confidence by artful means: an insinuating manner.