to be timid

to go forward, to advance, to progress / to improve, to progress

voluntarily; willingly

progress

challenge (against authority or a higher-ranked person) / (figuratively) try at something

to challenge / (figuratively) to take on the challenge of doing something (especially something one has not done before); to try; to try one's hand at

new, novel / latest, recent / modern / fresh

(archaic) new, novel / (archaic) latest, recent / (archaic) modern / (archaic) fresh

(obsolete) Alternative spelling of 新たし (aratashi): new, novel

(obsolete) Same as あたらし (atarashi) above