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5.7: More About un-1 and un-2

Difficulty Level: At Grade Created by: CK-12

More About un−1\begin{align*}un-^1\end{align*} and un−2\begin{align*}un-^2\end{align*}

1. The two prefixes spelled <un> have different meanings:

In the word unable, un- means ________. We will call this prefix un-1\begin{align*}^1\end{align*}.

In the word unlock, un- means ________. We will call this prefix un-2\begin{align*}^2\end{align*}.

2. Sort the following words into the two groups below:

unpackunoriginalunbuttonunworrieduncoloreduntieunobligedunlicensedunfoldunlockunnoticedunlinedunfriendlyunclearunwaxedunwrapping\begin{align*} &\text{unpack} &&\text{uncolored} &&\text{unfold} &&\text{unfriendly}\\ &\text{unoriginal} &&\text{untie} &&\text{unlock} &&\text{unclear}\\ &\text{unbutton} &&\text{unobliged} &&\text{unnoticed} &&\text{unwaxed}\\ &\text{unworried} &&\text{unlicensed} &&\text{unlined} &&\text{unwrapping}\end{align*}

3. Not every word that starts with the letters <un> contains a prefix un-. Read the following words and then sort them into the two groups below:

understandunannouncedunarmedunitsundoingunchallenginguntieuniverseuntruthunbuttonunionunable\begin{align*} &\text{understand} &&\text{units} &&\text{untie} &&\text{unbutton}\\ &\text{unannounced} &&\text{undoing} &&\text{universe} &&\text{union}\\ &\text{unarmed} &&\text{unchallenging} &&\text{untruth} &&\text{unable}\end{align*}

4. Be ready to explain how you identified the words that do not contain a prefix un-.

Word Squares

undounbaruncutundiduntieunlockunsunguntrueunclearunhearduncoloreduntouched\begin{align*}& \text{undo} && \text{unbar} && \text{unlock} && \text{unclear} && \text{uncolored}\\ &&& \text{uncut} && \text{unsung} && \text{unheard} && \text{untouched}\\ &&& \text{undid} && \text{untrue}\\ &&& \text{untie}\end{align*}

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