共（とも）に素晴（すば）らしい<span class='vocab-popout' data-vocab-id='276'>世界（せかい）</span>を創（つく）ってい<strong>こうではないか</strong>。

遊（あそ）んでばかりいないで<span class='vocab-popout' data-vocab-id='397'>勉強（べんきょう）</span><span class='vocab-popout' data-vocab-id='166'>でも</span>し<strong>ようではないか</strong>。

<span class='vocab-popout' data-vocab-id='564'>彼（かれ）</span>の成功（せいこう）を信（しん）じ<strong>ようではないか</strong>。

勝手（かって）に判断（はんだん）せず、診断（しんだん）が<span class='gp-popout vocab-popout' data-gp-id='12' data-vocab-id='383'>出（で）る</span>のを待（ま）<strong>とうではないか</strong>。

<span class='gp-popout vocab-popout' data-gp-id='30' data-vocab-id='91'>この</span>瀬戸物（せともの）をちゃんと鑑定（かんてい）してもら<strong><strong>おうではないか</strong></strong>。

<span class='vocab-popout' data-vocab-id='590'>意見（いけん）</span>の相違（そうい）があっても、話（はな）し合（あ）<strong>おうではないか</strong>。

<span class='vocab-popout' data-vocab-id='474'>大変（たいへん）</span><span class='vocab-popout' data-vocab-id='166'>でも</span><span class='vocab-popout' data-vocab-id='733'>毎日（まいにち）</span>トレーニングを行（おこ）な<strong>おうではないか</strong>。

立場（たちば）は変（か）わっても、率直（そっちょく）に語（かた）り合（あ）<strong>おうではないか</strong>。

<span class='vocab-popout' data-vocab-id='21'>いつ</span><span class='gp-popout vocab-popout' data-gp-id='360' data-vocab-id='992'>まで</span>意地（いじ）を張（は）っているんだ。仲直（なかなお）りし<strong>ようではないか</strong>。

<span class='vocab-popout' data-vocab-id='637'>日本語（にほんご）</span>を身（み）につけるために頑張（がんば）<strong>ろうではないか</strong>。

南北（なんぼく）を統一（とういつ）し<strong>ようではないか</strong>。

<span class='vocab-popout' data-vocab-id='864'>簡単（かんたん）</span>なことではないが、憎（にく）しみを捨（す）て<strong>ようではないか</strong>。

Additional explanation and example sentences

「うちに、～うではないか、あり得ない, and others」

<div class='writeup-body'><span class='gp-popout' data-gp-id='421'>ようではないか</span> is a construction that will primarily be used for making suggestions for mutual activities. This is a combination of either of the <span class='info-highlight' data-term='助動詞・じょどうし'>auxiliary verbs</span> う or よう, ではない, and the sentence-ending particle, か. う and よう primarily express will or intent like 'shall' in English. Due to the negation following them, the literal translation will be similar to 'shall we not do (A)?'. For ease of translation, this structure can be remembered as simply 'let's do (A)', or 'why don't we do (A)'.<br>As with all structures that use う or よう, <span class='gp-popout' data-gp-id='421'>ようではないか</span> will be attached to the end of a verb indicating the action which is being suggested.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>正々（せいせい）堂々（どうどう）と戦（たたか）<span class='gp-popout' data-gp-id='421'>おうではないか</span>。</div><div class='writeup-example--english'>Why don't we fight fair and square?</div></li><li class='writeup-example'><div class='writeup-example--japanese'>この問題（もんだい）をどう解決（かいけつ）するかみんなで考（かんが）え<span class='gp-popout' data-gp-id='421'>ようではないか</span>。</div><div class='writeup-example--english'>Why don't we all think about how we can solve this problem?</div></li></ul>Alternatively, the abbreviated for of じゃない may be used in place of ではない.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>こういう時（とき）こそお互（たが）い助（たす）け合（あ）<span class='gp-popout' data-gp-id='421'>おうじゃないか</span>。</div><div class='writeup-example--english'>Why don't we help each other, especially in times like this.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>せっかく日本（にほん）に来（き）たのだから、食（た）べれるだけの日本食（にほんしょく）を食（た）べ<span class='gp-popout' data-gp-id='421'>ようじゃないか</span>。</div><div class='writeup-example--english'>Since we have come all the way to Japan, why don't we eat as much Japanese food as we can.</div></li></ul>Despite this, <span class='gp-popout' data-gp-id='421'>ようではないか</span> is primarily a formal grammar structure, so will most often use the unabbreviated version, or even more polite <span class='gp-popout' data-gp-id='421'>ようではありませんか</span> construction.<div class='writeup-funfact'>Fun-fact - Occasionally, this grammar structure may be seen preceded by もらう. In these cases, it is usually challenging the listener to do something. This can be interpreted as 'why don't I have you do (A) then'.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>もっと綺麗（きれい）に壁紙（かべがみ）の張（は）り替（か）えができるのなら、張（は）り替（か）えて<span class='gp-popout' data-gp-id='421'>もらおうではないか</span>。</div><div class='writeup-example--english'>If you think that you're able to reapply the wallpaper better, then why don't I just get you to do it?</div></li><li class='writeup-example'><div class='writeup-example--japanese'>乗（の）せていってくれるって言（い）っていいるんだから乗（の）せて行（い）って<span class='gp-popout' data-gp-id='421'>もらおうではないか</span>。</div><div class='writeup-example--english'>They said that they will give us a ride, so why don't we have them give us a ride.</div></li></ul></div></div>

Grammar Info

う・よう + ではないか

let's do something, why don't we