1. A day when one's hair seems unmanageable; often then developing into a day when everything seems to go wrong, and one becomes increasingly irritable

Derived forms: bad hair days

• Dialeurodes citri
• dialling tone
• dialog
• dialog box
• dialogical
• dialogism
• dialogist
• dialogue
• dialogue box
• dialyse
• dialyser
• dialysis
• dialysis machine
• dialytic
• dialyze
• dialyzer
• diam
• diamagnet
• diamagnetic
• diamagnetism
• diamantine
• diamanté
• diameter
• diametral
• diametric