A sneaking feeling is a slight or vague feeling, especially one that you are unwilling to accept. I have a sneaking suspicion that they are going to succeed. have a sneaking feeling/suspicion/admiration to have a feeling about something or someone, but to not say anything about it because you are not sure or you might be embarrassed
Marked by cowardly concealment; deficient in openness and courage; underhand; mean; crouching