skep·ti·cism also scep·ti·cism 
(skĕptĭ-sĭz′əm)
(skĕptĭ-sĭz′əm)n.
1. A doubting or questioning attitude or state of mind; dubiety. See Synonyms at uncertainty.
2. Philosophy
a. The ancient school of Pyrrho of Elis that stressed the uncertainty of our beliefs in order to oppose dogmatism.
b. The doctrine that absolute knowledge is impossible, either in a particular domain or in general.
c. A methodology based on an assumption of doubt with the aim of acquiring approximate or relative certainty.
3. Doubt or disbelief of religious tenets.
- knock down
- knockdown
- knockdown-dragout
- knocker
- knock for a loop
- knock it off
- knock-knee
- knock-kneed
- knock off
- knockoff
- knock out
- knockout
- knock out of the box
- knock socks off
- knock (someone's) socks off
- knock someone's socks off
- knock some sense into
- knock/throw for a loop
- knock together
- knock up
- knockwurst
- knockwurst
- knoll
- knoll
- knop