The Tongue Twister
The sixth sick sheikh’s sixth sheep’s sick.
Why Is It Hard?
This seven-word sentence is widely considered one of the most difficult tongue twisters in the English language. It contains four different sounds that all require similar tongue and lip positions: S, SH, SK, and TH. The word sixth alone is a challenge because of the -KSTH ending, and sheikh is commonly mispronounced even without the surrounding words.
History and Origin
Linguists at MIT and Guinness World Records have both highlighted this phrase as one of the hardest tongue twisters ever recorded. The word sheikh, meaning a leader or elder in Arabic culture, is pronounced SHAYK in English. The combination of sixth and sheikh back to back creates a sound sequence that almost no fluent English speaker can produce quickly without error.
Tips for Saying It
Sheikh is pronounced SHAYK, not SHEEK. Sixth alone takes practice: SIK-STH, make the T and H separate. Say the first three words alone until perfect. Then add the second sixth. Then sheep’s sick. Build it word by word rather than diving into the full phrase.
Explore more tongue twisters on our site. Try the hard tongue twisters collection or browse tongue twisters for kids. Check out the full English tongue twisters list for more classics.