Supercalifragilisticexbealidocious . . .

Today our pastor posed a question that has stuck with me.  What is your favorite and least favorite word?  His were "yes" and "no".  At lunch we were discussing this as a family and L and I have the same favorite word - Supercalifragilisticexbealidocious.  It is such a fun word and could mean many things, but is pretty positive to me.  Now, if I had to pick a word I might use more frequently, I would probably pick "do".  To me it represents taking action.  As far as a least favorite, I would go with "can't".  I had a 4th grade teacher that taught us "Never say I can't, always say I'll try" and it has stuck with me over the years.  Maybe that is why I dislike "can't", it is sometimes said when an attempt hasn't even been made.  Charlotte Mason's motto is "I am, I ought, I can, I will".  Any thoughts as to what your favorite or least favorite words are?

PS  I forgot to mention L's least favorite word - ignore - he doesn't like the way it sounds and doesn't like it when he is ignored :(.