necessarily
US
UK necessarily adv: (inevitably, of necessity)
SC 一定 yí dìng
TC 一定
TC 一定
SC 必须 yí dìng，bì xū
TC 必須
TC 必須
Being underweight isn't necessarily unhealthy.
necessarily adv: (as a logical consequence)
SC 顺理成章地 shùn lǐ chéng zhāng de
SC 理所当然地 shùn lǐ chéng zhāng de ，lǐ suǒ dāng rán de
It isn't necessarily so that I'll be here when you get back.