"riddle" in the noun sense
1. riddle, conundrum, enigma, brain-teaser
a difficult problem
a coarse sieve (as for gravel)
"riddle" in the verb sense
pierce with many holes
"The bullets riddled his body"
set a difficult problem or riddle
"riddle me a riddle"
3. riddle, screen
separate with a riddle, as grain from chaff
4. permeate, pervade, penetrate, interpenetrate, diffuse, imbue, riddle
spread or diffuse through
"An atmosphere of distrust has permeated this administration"
"music penetrated the entire building"
"His campaign was riddled with accusations and personal attacks"
speak in riddles
explain a riddle
Source: WordNet® (An amazing lexical database of English)
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