The word "nus" uses 3 letters: nsu.

NUS is playable in:

Words With Friends5
Scrabble US3
Scrabble UK3

nus is a valid word in this word list. For a definition, see the external dictionary links below.

Try a search for nus in these online resources (some words may not be found):
Wiktionary - OneLook Dictionaries - Merriam-Webster - Google Search
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Direct anagrams of nus:

sun5 uns5

Words formed by adding one letter before or after nus (in bold), or to nsu in any order:

Shorter words found within nsu

List all words that start with Q, adjectives that start with Q or find all 5 letter words starting with Q

List all words by word length, browse all words in the list, explore all combinations of letters or find all adjectives starting with a letter

Words with all letters different - Letter pairs and double letters - Hook Word Lists