必 (bì) means “certainly”. The 必 stroke order has 5 strokes; the animation above shows them one at a time. Its radical is 心. To practise how to write 必, open writing practice; to hear how to pronounce 必, use the pronunciation trainer.
Words with 必
必 — bì, certainly; must; will; necessarily
必须 — bì xū, to have to; must; compulsory; necessarily
必须 — bì xū, to have to; must; compulsory; necessarily
