underpin
verb
[ ʌndəˈpɪn ]
• support (a building or other structure) from below by laying a solid foundation below ground level or by substituting stronger for weaker materials.
Similar:
support,
shore up,
prop up,
hold up,
buttress,
carry,
bear,
brace,
strengthen,
reinforce,
fortify,
underprop,
• support, justify, or form the basis for.
• "the theme of honour underpinning the two books"
Similar:
promote,
nurture,
encourage,
stimulate,
develop,
foster,
cultivate,
further,
advance,
boost,
forward,
contribute to,
be conducive to,
assist,
help,
aid,
abet,
strengthen,
advantage,
fuel,