English homophones
loo/Lou/lu
"loo" is a noun; "Lou" is a name - grammar picks the spelling, not sound. Size rank #30 of 1,007 English groups.
Data vintage
Grammar picks the spelling
Same sound, different grammar: "loo" arrives as a noun, while "Lou" is a name. Once the sentence role is fixed, only one spelling fits.
Spelling pairs in this cluster
- Single-letter fork: "loo" keeps o, "Lou" writes u at letter 3.
- No shared spelling stem: "loo" is 3 letters, "lu" is 2; only the sound ties them.
- No shared spelling stem: "Lou" is 3 letters, "lu" is 2; only the sound ties them.
Orthographic DNA of this cluster
Shared letters across loo, Lou, lu: l. Private letters are the ones only one spelling owns: the eye's fastest tell once sound is out of the picture.
loo
3 letters · 2 vowels · shape CVV
Inventory lo · private o
Lou
3 letters · 2 vowels · shape CVV
Inventory lou · private ou
lu
2 letters · 1 vowels · shape CV
Inventory lu · private u
Pick the spelling from the meaning
- Write "loo" when you mean: A lavatory: a room used for urination and defecation.
- Write "Lou" when you mean: A unisex given name.
- Write "lu" when you mean: Archaic form of loo (“card game”).
Each spelling
Nearby English homophone groups
What to do next
You've reviewed the 3-spelling cluster (loo, Lou, lu). Here's where to go from here.
- "Lou" is the most frequent headword in this 3-spelling cluster (rank #7,811 in English). Full entry
- Among English homophone groups, a cluster of 3 spellings ranks #30 by size (1,007 groups in this vintage). Corpus statistics
- Explore a nearby 3-spelling cluster: lava · larva · laver. Nearby cluster
- Grammar often disambiguates this cluster, match the meaning to the part of speech before picking a spelling. Pick by meaning
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.