Spen·cer 
(spĕnsər), Herbert 1820-1903.
(spĕnsər), Herbert 1820-1903. British philosopher who attempted to apply the theory of evolution to philosophy and ethics in his series Synthetic Philosophy (1862-1893).
- irregularity
- irregularly
- irrelative
- irrelatively
- irrelevance
- irrelevancy
- irrelevant
- irrelevantly
- irreligion
- irreligious
- irreligiously
- irreligiousness
- irremeable
- irremediable
- irremediably
- irremissibility
- irremissible
- irremissibly
- irremovability
- irremovable
- irremovably
- irreparability
- irreparable
- irreparableness
- irreparably