Sick Leave

Synonyms of sick leave

• medical leave
• sick day
• illness absence

Antonyms of sick leave

• duty
• work
• employment

Idiomatic Expressions for sick leave

• Phrase: Extended sick leave
  Meaning: A prolonged period of absence from work or school due to illness or health reasons.
  Usage: He's been on extended sick leave for several months now due to his back injury.