Meaning of the word "there is no little enemy" in English

What does "there is no little enemy" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

there is no little enemy

US /ðɛr ɪz noʊ ˈlɪtəl ˈɛnəmi/
UK /ðɛə rɪz nəʊ ˈlɪtəl ˈɛnəmi/
"there is no little enemy" picture

Idiom

a proverb meaning that one should not underestimate any opponent or danger, no matter how small or insignificant they may seem

Example:
You should prepare thoroughly for the match; remember, there is no little enemy.
Even a minor competitor can take your market share because there is no little enemy.