lax

Adjective

• emptying easily or excessively
  • loose bowels
    

• lacking in strength or firmness or resilience
  • a lax rope
    
  • a limp handshake
    

• pronounced with muscles of the tongue and jaw relatively relaxed (e.g., the vowel sound in `bet')

• lacking in rigor or strictness
  • such lax and slipshod ways are no longer acceptable
    
  • lax in attending classes
    
  • slack in maintaining discipline
    

Related words

• Synonyms: 
  loose , slack