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Updated June 2026
A chemical group derived from butane, used in rubber and sealant manufacture.
“Butyl rubber provides excellent airtightness for tyre inner tubes.”
bu·tyl
"Butyl" uses 5 different letters, which makes it efficient for eliminating options. Its 1 vowel balance the consonants.
"Butyl" is worth 10 points before board bonuses. Aim its letters at double/triple-letter and word squares to lift the score.
Change a single letter of “butyl” to make these 5-letter words — useful for Wordle and crossword clues.
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