Strong's #3642: oligopsuchos (pronounced ol-ig-op'-soo-khos)
 from 3641 and 6590; little-spirited, i.e. faint-hearted:--feebleminded.
Thayer's Greek Lexicon:
 ̓́ 
 
  oligopsuchos 
 
 1) fainthearted
 
  Part of Speech: adjective
Relation: from G3641 and G5590
  Citing in TDNT: 9:665, 1342
 
Usage:
This word is used 1 times:
1 Thessalonians 5:14: "them that are unruly, comfort the  feebleminded, support the weak, be patient"