taciturn
🇺🇸
/ˈtæsɪtɜːrn/
🇬🇧
/ˈtæsɪtɜːn/
quiet and not talking much, often seeming unfriendly
The taciturn guard didn't say a word as we passed by.
無口な警備員が私たちが通り過ぎる際に一言も言わなかった。