ai3
(interj. of disapproval)

ai4
(interj. of regret)

strokes 16
radical
strokes after radical 13
嗳腐 噯腐 ai4 fu3
putrid belching (medical term)

嗳腐吞酸 噯腐吞酸 ai4 fu3 tun1 suan1
putrid belching with regurgitation of stomach acid (medical term)

嗳气 噯氣 ai4 qi4
belching

嗳气腐臭 噯氣腐臭 ai4 qi4 fu3 chou4
putrid belching (medical term)

嗳气呕逆 噯氣嘔逆 ai4 qi4 ou3 ni4
belching and retching counterflow (medical term)

嗳气酸腐 噯氣酸腐 ai4 qi4 suan1 fu3
belching of sour putrid gas (medical term)

嗳气吞酸 噯氣吞酸 ai4 qi4 tun1 suan1
belching and acid swallowing (medical term)

嗳酸 噯酸 ai4 suan1
sour belching (medical term)