1. Smaller than normal for its kind
   - undersize

See also: little, small

• actualization
• actualize
• actually
• actuarial
• actuarial table
• actuary
• actuate
• actuated
• actuating
• actuation
• actuator
• actus reus
• acuate
• acuity
• Acular
• aculea
• aculeate
• aculeated
• aculeus
• acumen
• acuminate
• acuminate leaf
• acupressure
• acupuncture
• acupuncturist