If you've accidentally misspelled "Decepium", here are a few possible correct suggestions: 1) Decipium - resembling the Latin word "decipio" meaning deceive; 2) Depesium - a phonetic variation that maintains a similar sound; 3) Deceptium - merging "decept" with "tium" for a plausible alternative. Note: "Decepium" may not have an established correct spelling.