<entry id="2292539" stat="A" corpus="jmdict" type="jmdict">
<ent_corp type="jmdict">jmdict</ent_corp>
<ent_seq>1012340</ent_seq>
<k_ele>
<keb>向きになる</keb>
</k_ele>
<k_ele>
<keb>向きに成る</keb>
<ke_inf>&sK;</ke_inf>
</k_ele>
<r_ele>
<reb>ムキになる</reb>
<re_nokanji/>
</r_ele>
<r_ele>
<reb>むきになる</reb>
</r_ele>
<sense>
<pos>&exp;</pos>
<pos>&v5r;</pos>
<misc>&uk;</misc>
<gloss>to become serious</gloss>
<gloss>to take something seriously (e.g. a joke, teasing)</gloss>
<gloss>to become irritated or angry (esp. at something trivial)</gloss>
<gloss>to get worked up</gloss>
</sense>
<info>
<audit time="2014-03-11 20:28:16" stat="A" unap="true">
<upd_name>Jacopo Tedeschi</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>ムキになる is also a very used form as also confirmed by google hits. 

What about adding in the meanings "to get worked up"??
It seems to fit perfectly the term!
It is also a suggested translation here:
1) http://www.dictjuggler.net/yakugo/?word=get%20worked%20up
2) http://www.lint.co.jp/e+/PoD/PoD.php?num=432
3) http://www.romajidesu.com/dictionary/meaning-of-%E3%82%80%E3%81%8D%E3%81%AB%E3%81%AA%E3%82%8B.html
4) http://www.lares.dti.ne.jp/~kazukun/animede/other/LoveHina.htm</upd_detl>
<upd_refs>Weblio類語辞書
http://thesaurus.weblio.jp/content/%E3%83%A0%E3%82%AD%E3%81%AB%E3%81%AA%E3%82%8B

実用日本語表現辞典
http://www.practical-japanese.com/2011/07/blog-post_568.html

google hits
ムキになる 1,150,000</upd_refs>
<upd_diff>@@ -12,0 +13,4 @@
+&lt;r_ele&gt;
+&lt;reb&gt;ムキになる&lt;/reb&gt;
+&lt;re_nokanji/&gt;
+&lt;/r_ele&gt;
@@ -19,0 +24 @@
+&lt;gloss&gt;to get worked up&lt;/gloss&gt;</upd_diff>
</audit>
<audit time="2014-03-11 22:16:05" stat="A">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Tidying</upd_detl>
<upd_refs>Ngrams (ムキになる is v. common.)</upd_refs>
<upd_diff>@@ -22,2 +22,2 @@
-&lt;gloss&gt;to take something (joke, teasing) seriously&lt;/gloss&gt;
-&lt;gloss&gt;to become irritated or angry (usually at something trivial)&lt;/gloss&gt;
+&lt;gloss&gt;to take something seriously (joke, teasing)&lt;/gloss&gt;
+&lt;gloss&gt;to become irritated or angry (usu. at something trivial)&lt;/gloss&gt;</upd_diff>
</audit>
<audit time="2024-02-24 22:18:25" stat="A">
<upd_uid>stephen</upd_uid>
<upd_name>Stephen Kraus</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_refs>sankoku: 「ムキになる」とも書く

Google N-gram Corpus Counts
╭─ーーーーー─┬────────┬───────╮
│ 向きになる │  9,262 │ 14.8% │
│ 向きに成る │     39 │  0.1% │ - sK
│ むきになる │  9,710 │ 15.5% │
│ ムキになる │ 43,569 │ 69.6% │ - move up
╰─ーーーーー─┴────────┴───────╯</upd_refs>
<upd_diff>@@ -8,0 +9 @@
+&lt;ke_inf&gt;&amp;sK;&lt;/ke_inf&gt;
@@ -10,3 +10,0 @@
-&lt;r_ele&gt;
-&lt;reb&gt;むきになる&lt;/reb&gt;
-&lt;/r_ele&gt;
@@ -15,0 +14,3 @@
+&lt;/r_ele&gt;
+&lt;r_ele&gt;
+&lt;reb&gt;むきになる&lt;/reb&gt;</upd_diff>
</audit>
<audit time="2024-02-24 22:35:48" stat="A" unap="true">
<upd_name>Marcus Richert</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_diff>@@ -23,2 +23,2 @@
-&lt;gloss&gt;to take something seriously (joke, teasing)&lt;/gloss&gt;
-&lt;gloss&gt;to become irritated or angry (usu. at something trivial)&lt;/gloss&gt;
+&lt;gloss&gt;to take something seriously (e.g. a joke, teasing)&lt;/gloss&gt;
+&lt;gloss&gt;to become irritated or angry (esp. at something trivial)&lt;/gloss&gt;</upd_diff>
</audit>
<audit time="2024-02-25 00:24:05" stat="A">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
</audit>
</info>
</entry>