1. Characterized by hard work and perseverance
   - industrious, tireless, untiring

See also: diligent

• denotatum
• denote
• denotive
• denouement
• denounce
• denouncement
• dense
• dense blazing star
• dense-leaved elodea
• densely
• denseness
• densification
• densimeter
• densitometer
• densitometry
• density
• dent
• dent corn
• dental
• dental amalgam
• dental anatomy
• dental appliance
• dental assistant
• dental care
• dental caries