(sports, dance) partner / spouse / business partner

enter an agreement / conclude (a treaty)

entrance into an agreement / conclusion (a treaty)

business

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

to enter into a contract

contract, agreement