2
amalgamate(verb, close, set, fix, settle)
2
anneal(verb, close, set, fix, settle)
2
beat up(verb, phrasal verb, semiliquidity)
2
bind(verb, set, fix, develop, secure)
2
bloat(verb, increase, open, develop, spread)
2
bolster(verb, increase, open, develop, extend)
2
boost(verb, advance, increase, raise, rise)
2
bulk up(verb, expression, increase, open, develop)
2
callous(verb, adjective, close, set, fix)
2
candy(verb, strengthen, reinforce, harden, stabilize)
2
cement(verb, close, set, fix, develop)
2
contract(verb, close, set, fix, settle)
2
curd(noun, turn, spoil)
2
deepen(verb, set, advance, increase, raise)
2
densen(verb, develop, secure, join, unite)
2
detail(verb, increase, open, develop, extend)
2
explicate(verb, increase, open, develop, extend)
2
fasten(verb, place, set, fix, secure)
2
firm(verb, close, set, fix, settle)
2
firm up
11 years ago|6.5k views|share |citing 
APASmart Define. (2015). thicken thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thicken/thesaurus/synonyms
ChicagoSmart Define. 2015. "thicken thesaurus" https://smartdefine.org/thicken/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, thicken thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thicken/thesaurus/synonyms>.
MLASmart Define. "thicken thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/thicken/thesaurus/synonyms>