jiàn
healthy
Phonosemantic compound. 亻 represents the meaning and 建 represents the sound.
Evolution

Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
jiàn
strong, robust, healthy; strength; healthy; to invigorate; to strengthen; to be good at; to be strong in
Sources