economize

Verb

• spend sparingly, avoid the waste of
  • This move will save money
    
  • The less fortunate will have to economize now
    

• use cautiously and frugally
  • I try to economize my spare time
    
  • conserve your energy for the ascent to the summit
    

Related words

• Synonyms: 
  save , economise , conserve , husband
• Antonyms: 
  waste , blow , squander