endless
1. [ adjective ] tiresomely long; seemingly without end
Synonyms: interminable eternal
Examples:

"endless debates" "an endless conversation" "the wait seemed eternal" "eternal quarreling" "an interminable sermon"

Related terms: long
2. [ adjective ] infinitely great in number
Examples:

"endless waves"

Related terms: infinite
3. [ adjective ] having the ends united so as to form a continuous whole
Examples:

"an endless chain"

Related terms: continuous
4. [ adjective ] having no known beginning and presumably no end
Synonyms: sempiternal dateless
Examples:

"the dateless rise and fall of the tides" "time is endless" "sempiternal truth"

Related terms: infinite
5. [ adjective ] occurring so frequently as to seem ceaseless or uninterrupted
Synonyms: incessant perpetual
Examples:

"a child's incessant questions" "your perpetual (or continual) complaints"

Related terms: continual
Similar spelling:   endlessly
  entelea