Words Starting
With UN
UN- means "not" or "reverse." It's the second most common prefix in English — UNHAPPY, UNDO, UNLOCK, UNFAIR, UNZIP. Whether you're solving Wordle, building a Scrabble rack, or expanding vocabulary, UN- words are essential to know.
What Does UN- Mean?
The prefix UN- has two uses in English. As a negator, it means "not" — UNHAPPY means "not happy," UNFAIR means "not fair," UNLIKELY means "not likely." As a reversal marker, it means "undo" — UNLOCK means to reverse the act of locking, UNWRAP means to reverse wrapping, UNTIE means to reverse tying.
UN- is primarily Old English in origin (unlike RE-, which is Latin). It pairs most naturally with adjectives (UNCLEAR, UNWELL, UNSAFE) and verbs (UNDO, UNTIE, UNWRAP). In word games, UN- is powerful because UNZIP, UNFAZED, and UNKEMPT all contain high-value letters Z, F, and K.
UN Words by Length
2-letter
3-letter UN words
5-letter UN words
6-letter UN words
UN Words by Game
Scrabble UN Plays
UN is a valid 2-letter Scrabble word (2 pts). Best UN- plays: UNZIP (16 pts), UNIQUE (15 pts), UNKEMPT (16 pts), UNJUST (14 pts), UNFAZED (20 pts), UNBOXED (17 pts). Look for UN- hooks onto existing board words — if FAIR is played, UNFAIR scores FAIR's value plus the UN- extension.
Wordle UN Words
5-letter UN- Wordle answers: UNFIT, UNION, UNITY, UNTIL, UNZIP, UNCLE, UNDER, UNCUT, UNWED, UNTIE. UN- is a less common Wordle start but very eliminative — if your guess hits U and N, you narrow the remaining candidates significantly.
Words With Friends
UN- hook plays work well in WWF. UNIQUE (15 pts), UNLOCK (14 pts), and UNWIND (13 pts) are strong WWF plays. The UN- prefix adds to many common board words, making it easy to score a bonus turn by extending an opponent's word.
Vocabulary Building
UN- is one of the best prefixes for expanding vocabulary because knowing the root word immediately gives you the negation or reversal. Learn HAPPY → UNHAPPY, LOCK → UNLOCK, FAIR → UNFAIR, ZIP → UNZIP, WRAP → UNWRAP, TIE → UNTIE. One prefix, hundreds of new words.
Frequently Asked Questions
What does the UN- prefix mean?
UN- has two meanings. As a negator, it means "not" — UNHAPPY = not happy, UNFAIR = not fair. As a reversal marker, it means "undo" — UNLOCK = reverse locking, UNTIE = reverse tying. UN- is Old English in origin and primarily attaches to adjectives and verbs.
Is UN a valid Scrabble word?
Yes. UN is a valid 2-letter Scrabble word worth 2 points. It is used informally to mean "one" (as in "the little un" or "that's a good un"). UN is one of the 107 valid 2-letter words in the Official Scrabble Players Dictionary.
What are the highest-scoring UN words in Scrabble?
Top UN- Scrabble plays include UNZIP (16 pts), UNFAZED (20 pts), UNKEMPT (16 pts), UNIQUE (15 pts), UNJUST (14 pts), UNBOXED (17 pts). These work well because UN- contains two common tiles (U, N) that extend into high-value root endings.
What common words start with UN?
Common everyday UN- words include: UNDO, UNIT, UNCLE, UNDER, UNFIT, UNION, UNTIL, UNZIP, UNFAIR, UNHAPPY, UNLIKE, UNLESS, UNLOCK, UNPACK, UNREST, UNSAFE, UNWISE, UNCLEAR, UNCOVER, UNKNOWN, UNUSUAL. UN- words span every difficulty level and topic area.
What is the difference between UN- and IN- as negating prefixes?
Both UN- and IN- (and its variants IM-, IL-, IR-) mean "not," but they come from different origins. UN- is Old English and attaches to native English words (UNHAPPY, UNKIND, UNSAFE). IN- is Latin and attaches to Latinate words (INADEQUATE, INVISIBLE, IMPROPER). As a general rule: if the base word sounds Anglo-Saxon, use UN-; if it sounds Latinate, use IN-.