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Updated June 2026
fuming sulphuric acid
“The oleum was handled with extreme caution.”
o·le·um
"Oleum" uses 5 different letters, which makes it efficient for eliminating options. Its 3 vowels help pin down vowel positions early.
"Oleum" is worth 7 points before board bonuses. Aim its letters at double/triple-letter and word squares to lift the score.
Change a single letter of “oleum” to make these 5-letter words — useful for Wordle and crossword clues.
Look up oleum in an authoritative dictionary for full definitions, pronunciation, and etymology.
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