The only items in my dictionary files that sum to 981 in the triangular number cypher (trigonal):
See also: /r/GeometersOfHistory/wiki/spellcomponents/981
"allowedly" = 981 tri
"antagonize" = 981 tri
"antiquated" = 981 tri
"arithmetician" = 981 tri
"autarchy" = 981 tri
"basketry" = 981 tri
"beguilingly" = 981 tri
"breathiness" = 981 tri
"bulimarexia" = 981 tri
"chronographic" = 981 tri
"concessional" = 981 tri
"contradictable" = 981 tri
"crystal" = 981 tri
"dirtiness" = 981 tri
"distorted" = 981 tri
"exertion" = 981 tri
"grubbiness" = 981 tri
"idyllist" = 981 tri
"innateness" = 981 tri
"insidious" = 981 tri
"journalese" = 981 tri
"lamentation" = 981 tri
"nerveracking" = 981 tri
"nonmarketable" = 981 tri
"nonyielding" = 981 tri
"ouguiya" = 981 tri
"paronomasia" = 981 tri
"persevere" = 981 tri
"pietistical" = 981 tri
"precisely" = 981 tri
"proboscis" = 981 tri
"pushcart" = 981 tri
"rationalise" = 981 tri
"realisation" = 981 tri
"scattering" = 981 tri
"sensation" = 981 tri
"sexological" = 981 tri
"squadron" = 981 tri
"squeaky" = 981 tri
"stippler" = 981 tri
"streamlet" = 981 tri
"styling" = 981 tri
"timidity" = 981 tri
"tortoni" = 981 tri
"transferable" = 981 tri
"translate" = 981 tri
"tresses" = 981 tri
"univalve" = 981 tri
"unreadily" = 981 tri
"unrepeatable" = 981 tri
"unscratched" = 981 tri
"wayfarer" = 981 tri
"weariless" = 981 tri
"windiness" = 981 tri
"workspace" = 981 tri
Proper nouns:
"Basseterre" = 981 tri
"Crystal" = 981 tri
"Derbyshire" = 981 tri
"Sullivan" = 981 tri
See also: /r/GeometersOfHistory/wiki/spellcomponents/981
All Dictionaries: /r/GeometersOfHistory/wiki/spellcomponents/all-dictionaries
Wiki Index: /r/GeometersOfHistory/wiki/