sign on

Từ điển WordNet v3.1 - WordNet Dictionary

verb

engage by written agreement
- They signed two new pitchers for the next season
• Syn:
sign, contract, sign up
• Derivationally related forms:
contract (for: contract), signer (for: sign)
• Hypernyms:
hire, engage, employ
• Hyponyms:
contract out
• Verb Frames:
- Somebody ----s somebody
- Somebody ----s (for: sign)