noun
a difficult problem
Synonyms
noun
a coarse sieve (as for gravel)
verb
pierce with many holes
Examples
- The bullets riddled his body
verb
set a difficult problem or riddle
Examples
- riddle me a riddle
verb
separate with a riddle, as grain from chaff
Synonyms
verb
spread or diffuse through
Synonyms
Examples
- An atmosphere of distrust has permeated this administration
- music penetrated the entire building
- His campaign was riddled with accusations and personal attacks