There are 199 words that start with UM in our word list of 382,657 words, and every one of them is on this page — grouped by length so you can scan fast, with a live filter when you need something narrower. The biggest group is the 8-letter words (39 of them); the spread is 1 of them 2 letters long, 4 of them 3 letters long, 4 of them 4 letters long, 19 of them 5 letters long, and more up to 15 letters. The longest entries are umbelluliferous, umbraculiferous and umbriferousness. Word-game players keep lists like this open for a reason: Scrabble and Words With Friends reward the obscure corners of the dictionary, crossword solvers live on pattern matching, and Wordle players work by elimination.
The full list
2-letter words (1)
um
3-letter words (4)
ume umm ump umu
4-letter words (4)
umbo umph umps umpy
5-letter words (19)
umami umaua umbel umber umble umbos umbra umbre umest umiac umiak umiaq umiri umist ummps umped umpie umpty umset
6-letter words (29)
umamis umbels umbers umbery umbles umbone umbrae umbral umbras umbrel umbres umbret umbril umfaan umfazi umgang umiack umiacs umiaks umiaqs umland umlaut umload umpies umping umpire umpqua umteen umwelt
7-letter words (34)
umbelap umbeled umbella umbered umberty umbeset umbilic umbonal umbones umbonic umbrage umbraid umbrana umbrate umbrels umbrere umbrian umbriel umbrils umbrina umbrine umbrose umbrous umbundu umfazis umiacks umlauts umlungu umpired umpirer umpires umpteen umwelts umwhile
8-letter words (39)
umangite umatilla umbecast umbeclad umbellar umbelled umbellet umbellic umberima umbering umbilici umbonate umbonial umbonule umbracle umbraged umbrages umbrally umbrated umbratic umbrella umbrello umbreres umbrette umbriere umlauted umlungus umouhile umpirage umpiress umpiring umpirism umppired umpsteen umpteens umptieth umquhile umstroke umteenth
9-letter words (23)
umangites umbellate umbellets umbelloid umbellula umbellule umbelwort umbethink umbilical umbilicar umbilicus umbilroot umbonated umbratile umbrellas umbrettes umbrosity umimpeded umlauting umpirages umppiring umpteenth umptekite
10-letter words (14)
umbellales umbellated umbellifer umbibilici umbilicate umbiliform umbonation umbonulate umbracious umbraculum umbrageous umbratical umbrellaed umpireship
11-letter words (12)
umbellately umbelliform umbellulate umbilectomy umbilically umbilicaria umbilicated umbilicuses umbolateral umbraculate umbrellaing umbriferous
12-letter words (10)
umbelliferae umbellularia umbellulidae umbilication umbiliciform umbrageously umbrellaless umbrellalike umbrellawise umbrellawort
13-letter words (4)
umbelliferone umbelliferous umbraculiform umbriferously
14-letter words (3)
umbelliflorous umbraciousness umbrageousness
15-letter words (3)
umbelluliferous umbraculiferous umbriferousness
Frequently asked questions
How many words that start with UM are there?
Our word list contains 199 words that start with UM, out of 382,657 entries in total. They run from 2 to 15 letters, and the 8-letter group is the largest with 39 words.
What are the longest words that start with UM?
The longest are umbelluliferous (15 letters), umbraculiferous (15 letters) and umbriferousness (15 letters).
Which words that start with UM score highest in Scrabble?
By raw letter values, the top scorers on this page are umbraculiferous (24 points), umbraculiform (24 points) and umbiliciform (23 points) — before any letter or word multipliers. One honest caveat: this list is a broad English word list, so a few rare or technical entries appear that official game dictionaries (and Wordle’s answer list) do not accept. Always check a play against the dictionary your game uses.
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