taru-adjective, adverb taking the 'to' particle
awe-inspiring; majestic; commanding
Archaic yojijukugo describing a person or presence that is dignified and imposing. Used in literary or historical contexts.
将軍は威風凛々と馬にまたがっていた。
The general sat on his horse with an imposing air.
彼の威風凛々たる態度に、誰もが圧倒された。
Everyone was overwhelmed by his majestic demeanor.
Also a yojijukugo meaning 'majestic' or 'imposing', but more common and less archaic than 威風凛々.
A yojijukugo combining 威風 (dignity, majesty) and 凛々 (stately, solemn). The exact historical origin is uncertain, but it is used to describe an awe-inspiring presence.