to  spell   trouble
spell
trʌbəl
trabēl
<abbr style="text-decoration: underline;" title="trouble / danger" > trouble</abbr>
deɪnʤə
deinjē

Definition & Meaning of "spell trouble"in English

to spell trouble
01

to indicate or suggest that a situation or action is likely to lead to problems 

to [spell] (trouble|danger) definition and meaning
Idiom

What is the origin of the idiom "spell trouble" and when to use it?

The idiom "spell trouble" is used to suggest that a specific event, circumstance, or series of actions will lead to trouble or danger. The origin of this idiom is unclear, but it likely stems from the idea of casting a spell that brings about negative consequences or misfortune.

Examples
A sudden drop in sales could spell trouble for the company. 
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