a sneaking feeling is one that you are not sure about or do not want to have (感觉)不确定的,不由的,暗暗的 a sneaking admiration/respect for someone : I have always had a sneaking admiration for him. 我一向总是暗暗钦佩他。
a sneaking suspicion/fear/feeling : I had a sneaking suspicion that he wanted me to leave. 我隐约有点怀疑他想要我离开。
Synonyms and related words