1. Indicating a lack of maturity
   "infantile behaviour"
   - childish 
2. Of or relating to infants or infancy
   "infantile paralysis" 
3. Being or befitting or characteristic of an infant
   "infantile games"

See also: immature, infancy, young

• heckelphone
• heckle
• heckler
• heckling
• hectare
• hectic
• hectically
• hecto-
• hectogram
• hectograph
• hectoliter
• hectolitre
• hectometer
• hectometre
• hector
• Hector Berlioz
• Hector Hevodidbon
• Hector Hugh Munro
• heddle
• Hedeoma
• hedeoma oil
• Hedeoma pulegioides
• Hedera
• Hedera helix
• hedge