neck and neck

词形变化：

形容词: neckless | 动词过去式: necked | 动词过去分词: necked | 动词现在分词: necking | 动词第三人称单数: necks |

同义词：

essential | obligation | requirement | need | requisite | necessary | inevitability | prerequisite | compulsion | must | basic | stipulation | ineluctability | inescapability | certainty | indispensability | certitude | obligato | needful | essentiality | mandatary | duress | constraint | necessity | force | pressure | want | coercion | penury | desire | poverty | indigence | indispensable | neediness | demand | beggary | impecuniosity | destitution | impoverishment | imperative | pauperism | privation | urgency | exigency | vital | component |

反义词：

unnecessary | chance |