Sustentative
Word Structure
WordHub has a local lexical record for “Sustentative” with pronunciation and root analysis.
sus-
under, below lower in rank; to a lesser degree; forming a division into smaller or less important parts; with less than the normal amount of
Forms: sub, suc, suf, sug, sum, sup
tent
to hold
Forms: ten, tent, tain, tin
-ative
having the nature of, tending to
Forms: ative, itive