the base or trunk of a tree left after the rest has been cut off

a difficult problem or puzzle

एक कठिन समस्या या पहेली

English Usage: She was left with a stump of a riddle that she couldn't solve.

Hindi Usage: उसे एक ऐसी पहेली का ठूंठ मिला जिसे वह सुलझा नहीं सकी।

to confuse or baffle someone

to be at a loss for words

शब्दों के लिए संकट में होना

English Usage: He was stumped when asked about his future plans.

Hindi Usage: जब उससे उसके भविष्य के योजनाओं के बारे में पूछा गया, तो वह शब्दहीन हो गया।