1. (adjective) tiresomely long; seemingly without end

• eternal
• interminable

2. (adjective) having no known beginning and presumably no end

• dateless
• sempiternal

1. (adjective) tiresomely long; seemingly without end

• long

2. (adjective) infinitely great in number

• infinite

3. (adjective) having no known beginning and presumably no end

• infinite

4. (adjective) having the ends united so as to form a continuous whole

• continuous
• uninterrupted

1. (adjective) tiresomely long; seemingly without end

• endlessness
• eternity

2. (adjective) infinitely great in number

• endlessness

3. (adjective) having no known beginning and presumably no end

• endlessness

4. (adjective) having the ends united so as to form a continuous whole

• endlessness