<entry id="2290379" stat="A" corpus="jmdict" type="jmdict">
<ent_corp type="jmdict">jmdict</ent_corp>
<ent_seq>2859994</ent_seq>
<k_ele>
<keb>微動だにする</keb>
</k_ele>
<r_ele>
<reb>びどうだにする</reb>
</r_ele>
<sense>
<pos>&exp;</pos>
<pos>&vs-i;</pos>
<s_inf>usu. in the negative</s_inf>
<gloss>to budge</gloss>
<gloss>to move even slightly</gloss>
<gloss>to move even an inch</gloss>
</sense>
<info>
<audit time="2024-01-24 14:49:22" stat="A" unap="true">
<upd_name>Brian Krznarich</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>I don't think this is a case of "better as an example sentence", but I know there may be disagreement. 

sankoku gives this as the sole example for 微動: [-だにしない].  It is also the first of two examples for the だに entry(the other is [思うだに悲しい], which is rare and has 0 ngrams).  I saw this in a "sword in the stone" description.  Many heroes tried to remove the sword, but it never even budged.

I think "to budge" is a great gloss, but it would be weird to try and stick it as noun into the main 微動 entry("budging"?) *and* there would still be no clue there as to the importance of だに.

If you search eijiro for だにせず, there are 6 collocations, 5 of them are with 微動.  If you search だにしない, you'll also see 予想だに and 一顧だに.  But this noun is perhaps the most-common common use of だに, which I'd never seen before this.

微動だにする with a [note] avoids the alternative of separate (or no) entries for: 
微動だにせず
微動だにしない
微動だにしなかった
... and some other neg forms I found:
微動だにすることなく	184
微動だにできない	556	  
微動だにできず	256	  
微動だにできなかった	235	 

but I would rather see an entry with any of those than no entry at all.

It looks like だに, which we mark (and kokugos mark) as [form/lit] is perhaps not actually either of those in this fixed expression.  I'm going to pitch an xref here from だに.  I would also suggest one from 微動 itself, as this is fully 50% of uses.

Modeled a bit after 釈然とする and 飽きもせず entries.  Maybe wishful thinking to propose this, but I believe this is useful on several levels.</upd_detl>
<upd_refs>微動	159952	  
微動だ	85505	&lt;--- fully half the time used with this structure.  Very large absolute # of ngrams
微動だに	83666	  
微動だにしない	37577	  &lt;-- しない
微動だにせず	25451	  &lt;---  or せず
微動だにしなかった　6949 &lt;--- or なかった	  
微動の	6857	  
微動だにしません	6747	&lt;-- or しません
微動が	4355	  
微動を	4309

微動だに	88725	56.1% &lt;--- 微動 is the most common use of だに, even though 予想 is *way* more common.
予想だに	58941	37.2%
一顧だに	10597	6.7%

予想	19922234  99.1%　　&lt;--- 0.2 % だに
微動	159974	0.8%       &lt;-- 50%+ だに collocation
一顧	13587	0.1%

https://eow.alc.co.jp/search?q=%e3%81%a0%e3%81%ab%e3%81%97%e3%81%aa%e3%81%84
微動だにしない
budge not an inch [a millimeter]
not move an inch
not move at all
not stir an inch
be perfectly [absolutely, completely, entirely, totally] motionless
perfectly [absolutely, completely, totally, entirely, fully] still

～では微動だにしない
be utterly unmoved by

ずっと微動だにせず立つ
stand completely still all the time

微動だにせず横たわる
lie absolutely still</upd_refs>
</audit>
<audit time="2024-01-27 11:07:34" stat="A">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Worth having.</upd_detl>
<upd_refs>GG5 and 中辞典 examples.</upd_refs>
<upd_diff>@@ -11,0 +12 @@
+&lt;pos&gt;&amp;vs-i;&lt;/pos&gt;</upd_diff>
</audit>
<audit time="2024-01-28 09:53:17" stat="A" unap="true">
<upd_name>Fryderyk Mazurek</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Fixed reading.</upd_detl>
<upd_diff>@@ -8 +8 @@
-&lt;reb&gt;微動だにする&lt;/reb&gt;
+&lt;reb&gt;びどうだにする&lt;/reb&gt;</upd_diff>
</audit>
<audit time="2024-01-28 10:58:13" stat="A">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Thanks. I should have noticed that.</upd_detl>
</audit>
</info>
</entry>