Upset the applecart(idiom)
To ruin or interfere with one’s plans or goals.
Hindi meaning:किसी को योजना में हस्तेक्षप करना
Synonyms: Frustrate, Spoil, Thwart, Intercept, Impede
Antonyms: Help, Facilitate, Assist, Aid, Encourage
Example: He was making a fantastic profit until a competitor upset the applecart by cutting prices.
Trick to remember: Upset kar diya Upset the applecart karke. 
