1. Annoyed and irritable
   - crabbed, crabby, cross, fussy, grouchy, grumpy, bad-tempered, ill-tempered

See also: ill-natured

• flexibleness
• flexibly
• flexile
• flexion
• flexitime
• flexor
• flexor muscle
• flextime
• flexuous
• flexure
• flibbertigibbet
• flick
• flick-knife
• flicker
• flickering
• flickertail
• flier
• flies
• flight
• flight attendant
• flight control
• flight deck
• flight engineer
• flight feather
• flight indicator