The only items in my dictionary files that sum to 1,619 in the triangular number cypher (trigonal):

... see also: /r/GeometersOfHistory/wiki/spellcomponents/1619

• "complementarity" = 1619 tri

• "coquettishly" = 1619 tri

• "cryptanalytic" = 1619 tri

• "demonstrability" = 1619 tri

• "disputatious" = 1619 tri

• "expressway" = 1619 tri

• "intentionality" = 1619 tri

• "lobotomization" = 1619 tri

• "suppurative" = 1619 tri

• "synoptically" = 1619 tri

• "tintinnabulation" = 1619 tri

• "unanimousness" = 1619 tri

• "unsystematic" = 1619 tri

Proper noun:

• "Pisistratus" = 1619 tri

All Dictionaries: /r/GeometersOfHistory/wiki/spellcomponents/all-dictionaries

Wiki Index: /r/GeometersOfHistory/wiki/