Meaning of sleeper build | Babel Free

Definitions

1. A physique that may not appear attractive or appealing at first glance, only until it is flexed or uncovered.
   countable, slang, uncountable
2. A powerful computer with high specifications that looks ordinary or unimpressive from the outside.
   countable, slang, uncountable

Examples

“The RTX 4080 with an office-PC case makes for a mighty sleeper build.”

CEFR level