1. (

• conserve ,
• husband ,
• economize ,
• economise

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

2. (

• save ,
• economize ,
• economise ,

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