Another stinker from spelling bee words. Dear Bean, note sound little clue to spelling.
scilicet sili set
ME < L, contr. of scire licet, it is permitted to know: see SCIENCE & LICENSE6
adv.
namely; to wit; that is to say I never saw it before, think it unfair to expect kids to know it.
Unless, of course the kids get a complete list of words for which they are to be tested on.
Still, there are so many more appropriate words that could have been chosen.