1. (

• ageless ,
• aeonian ,
• eonian ,
• eternal ,
• everlasting ,
• perpetual ,
• unending ,
• unceasing

) continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven" ;

2. (

• endless ,
• eternal ,
• interminable

) tiresomely long; seemingly without end; "endless debates"; "an endless conversation"; "the wait seemed eternal"; "eternal quarreling"; "an interminable sermon" ;