１万（まん）<span class='vocab-popout' data-vocab-id='371'>円（えん）</span>は社会人（しゃかいじん）<strong>ならいざ知（し）らず</strong>、<span class='vocab-popout' data-vocab-id='526'>小学生（しょうがくせい）</span>にとっては想像（そうぞう）を絶（ぜっ）<span class='vocab-popout' data-vocab-id='138'>する</span>金額（きんがく）だ。

百（ひゃく）<span class='vocab-popout' data-vocab-id='542'>年（ねん）</span><span class='vocab-popout' data-vocab-id='395'>前（まえ）</span><strong>ならいざ知（し）らず</strong>、現代（げんだい）の<span class='gp-popout vocab-popout' data-gp-id='30' data-vocab-id='91'>この</span><span class='vocab-popout' data-vocab-id='444'>国（くに）</span>においては情報（じょうほう）へのアクセスは容易（ようい）になっているから<span class='gp-popout vocab-popout' data-gp-id='37' data-vocab-id='148'>その</span>ようなことを<span class='gp-popout vocab-popout' data-gp-id='714' data-vocab-id='964'>誰（だれ）</span><span class='vocab-popout' data-vocab-id='166'>でも</span>知（し）っているはずだ。

「<span class='vocab-popout' data-vocab-id='1009'>運動（うんどう）</span>は不健康（ふけんこう）<span class='vocab-popout' data-vocab-id='154'>だから</span>しない」と<span class='vocab-popout' data-vocab-id='672'>最近（さいきん）</span>よく<span class='gp-popout vocab-popout' data-gp-id='26' data-vocab-id='893'>聞（き）く</span>。プロの<span class='vocab-popout' data-vocab-id='134'>スポーツ</span><span class='vocab-popout' data-vocab-id='1016'>選手（せんしゅ）</span><strong>ならいざ知（し）らず</strong>、一般（いっぱん）の<span class='vocab-popout' data-vocab-id='300'>人（ひと）</span>ならば、<span class='vocab-popout' data-vocab-id='1009'>運動（うんどう）</span>は有益（ゆうえき）で<span class='vocab-popout' data-vocab-id='676'>ある</span>。

「<span class='vocab-popout' data-vocab-id='905'>自分（じぶん）</span><span class='vocab-popout' data-vocab-id='247'>一人（ひとり）で</span>衣装（いしょう）を着（き）て<span class='vocab-popout' data-vocab-id='707'>楽（たの）し<span class='gp-popout' data-gp-id='26'>む</span></span>の<strong>ならいざ知（し）らず</strong>、人前（ひとまえ）にコスプレ姿（すがた）で<span class='gp-popout vocab-popout' data-gp-id='12' data-vocab-id='383'>出（で）る</span>のは<span class='vocab-popout' data-vocab-id='849'>私（わたし）</span>にとっては不可能（ふかのう）に<span class='gp-popout vocab-popout' data-gp-id='24' data-vocab-id='994'>近（ちか）い</span>です。」

<span class='vocab-popout' data-vocab-id='919'>若（わか）い</span><span class='vocab-popout' data-vocab-id='501'>子（こ）</span><strong>ならいざ知（し）らず</strong>、３０<span class='vocab-popout' data-vocab-id='727'>歳（さい）</span>の<span class='vocab-popout' data-vocab-id='470'>大人（おとな）</span>にはそんな<span class='vocab-popout' data-vocab-id='288'>事（こと）</span>は許（ゆる）されない。

A：「<span class='vocab-popout' data-vocab-id='502'>子供（こども）</span>の<span class='vocab-popout' data-vocab-id='1064'>頃（ころ）</span>、<span class='gp-popout vocab-popout' data-gp-id='14' data-vocab-id='88'>ここ</span>でザリガニを釣（つ）ったものだ。」<br> B：「昔（むかし）<strong>ならいざ知（し）らず</strong>、現代（げんだい）では<span class='vocab-popout' data-vocab-id='534'>川（かわ）</span>が汚染（おせん）されているから​​無理（むり）です。」

<div class='writeup-body'><span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span> is a grammar expression which combines the <span class='info-highlight' data-term='仮定形・かていけい'>hypothetical form</span> of the auxiliary verb だ, なら, the adverb いざ ‘now’, or ‘well then’, and the classically-negated form of the う-Verb 知（し）る, 知（し）らず ‘to not know’. It is often translated as ‘I don’t know about (A), but (B)’, or ‘maybe (A), but (B). This phrase is formal, and usually used to emphasize that, regardless of (A), (B) fits a specific description.<br>
<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span> will follow verbs in their <span class='info-highlight' data-term='普通形・ふつうけい'>standard forms</span>. Additionally, it may follow either な-Adjectives or nouns that have had their terminal だ replaced with なら.<ul class='writeup-examples--holder'>
 <li class='writeup-example'>
<div class='writeup-example--japanese'>
結婚式（けっこんしき）かなんかに出席（しゅっせき）する<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、友達（ともだち）の家（いえ）に行（い）くだけなんだからスーツなんて着（き）ていかなくてもいいんじゃない？</div><div class='writeup-example--english'>
I don't know if you're going to a wedding or something, but since you're just going to your friend's house, you probably don't have to wear a suit.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>


15分（ふん）待（ま）つ<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、いくら友達（ともだち）でも30分（ぷん）以上（いじょう）待（ま）つのは無理（むり）だ。</div><div class='writeup-example--english'>
It’s possible for me to wait for 15 minutes, but I won’t be able to wait more than 30 minutes, no matter how good of a friend they are.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>


経験（けいけん）豊富（ほうふ）で仕事（しごと）が上手（じょうず）<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、まだ始（はじ）めたばかりの子（こ）にこの仕事（しごと）を任（まか）せるのはかわいそうすぎますよ。</div><div class='writeup-example--english'>
I don’t know about people that have a lot of experience and are good at their jobs, but I feel bad giving such work to a person that just started.</div></li><li class='writeup-example'><div class='writeup-example--japanese'> 


平日（へいじつ）<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、連休（れんきゅう）中（ちゅう）に遊園地（ゆうえんち）などのようなところに行（い）く人（ひと）は多（おお）いだろう。</div><div class='writeup-example--english'>
I don't know about weekdays, but I’m sure that there are a lot of people that go to places like amusement parks during holidays.</div></li></ul>
Just like the literal translation of ‘if it’s (A), well then I don’t know’, this structure emphasizes that (A) may or may not be the case, but (B) is definite. However, there is no direct use of ‘but’ in Japanese. This shows that the ‘but’ comes from the simple contrast of (A) being unknown while (B) is known.<br>
<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span> may also be seen following other structures such as い-Adjectives when they have been nominalized with の.<ul class='writeup-examples--holder'>
 <li class='writeup-example'>
<div class='writeup-example--japanese'>
新（あたら）しいの<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、前（まえ）のモデルはよく勝手（かって）に電源（でんげん）が落（お）ちたからあまり売（う）れなかったらしい。</div><div class='writeup-example--english'>
I don’t know about the new ones, but the older models didn’t sell well because they would turn off on their own.</div></li></ul>
This の pattern is also used with verbs, but it is less common than simply attaching ならいざしらず to one of the standard verb forms.
<div class='writeup-funfact'><div class='funfact-header'>Fun Fact</div>In many cases, (A) is an extreme example used to show that (B) is the opposite of that, and is therefore either surprising or irritating.<ul class='writeup-examples--holder'>
 <li class='writeup-example'>
<div class='writeup-example--japanese'>
大昔（おおむかし）<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、現代（げんだい）では詐欺（さぎ）についてよくテレビやインターネットで話題（わだい）になっているから、詐欺（さぎ）の手口（てぐち）も年々（ねんねん）と進化（しんか）していってる。</div><div class='writeup-example--english'>
I don’t know about the past, but nowadays, scams are often talked about on TV and the internet today, so scam tactics are evolving year by year.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>


神（かみ）<span class='gp-popout' data-gp-id='933'>ならいざ知（し）らず</span>、俺（おれ）みたいなやつにはああいうことをする奴（やつ）たちを許（ゆる）すことなどできない。</div><div class='writeup-example--english'>
I don't know about the gods, but it is very hard for a person like me to forgive people that do things like that.</div></li></ul></div>
<div class='writeup-caution'><div class='caution-header'>Caution</div>Occasionally は will be used instead of なら. However, the meaning of the overall phrase will remain the same.<ul class='writeup-examples--holder'>
 <li class='writeup-example'>
<div class='writeup-example--japanese'>
60年（ねん）前（まえ）<span class='gp-popout' data-gp-id='933'>はいざ知（し）らず</span>、今（いま）では喫煙（きつえん）する人（ひと）が減（へ）ってきている。</div><div class='writeup-example--english'>
I don’t know about 60 years ago, but nowadays, there are less people that smoke.</div></li></ul></div></div>

Grammar Info

ならいざ知(し)らず

Don’t know about it, Maybe it would/might be possible for