different between unvarying vs semperidentical

English

Etymology

From un- +? varying.

Adjective

unvarying (comparative more unvarying, superlative most unvarying)

1. persistent, constant, changeless

   Synonyms: constant, nonchanging, unchanging; see also Thesaurus:changeless

2. lacking variety; having a uniform character

   Synonyms: stable; see also Thesaurus:steady

Translations

English

Etymology

Blend of Latin semper ?dem (“always the same”) +? identical.

Pronunciation

• (Received Pronunciation) enPR: s?m'p?r?d?n?t?k?l, IPA^(key): /?s?mp??a??d?nt?k?l/
• (General American) enPR: s?m'p?r?d?n?t?k?l, IPA^(key): /?s?mp????d?nt?k?l/

Adjective

semperidentical (not comparable)

1. (rare nonce word) Remaining always the same; unvarying with the passage of time.
   • 1820–1847: Thomas Griffiths Wainewright [aut.] and William Carew Hazlitt [ed.], Essays and Criticisms, page 98 (1880 publication)

     That perfectly semperidentical display of idiosyncratic egotism which runs through…all his varieties.

References

• “semper-identical a.” defined as a derived term of the prefix “?semper-”, listed in the Oxford English Dictionary [2^nd Ed.; 1989]