1
install(verb, place, set, fix, secure)
1
instill(verb, place, set, secure, settle)
1
inure(verb, dull, develop, rough, adjust)
1
jellify(verb, form, set, fix, develop)
1
jelly(verb, form, set, fix, develop)
1
keep(verb, maintain, encourage, raise, back)
1
keep an eye on(verb, expression, idiom, keep, maintain)
1
lend a hand(verb, expression, idiom, support, increase)
1
link(verb, place, set, fix, secure)
1
locate(verb, place, set, secure, settle)
1
lodge(verb, place, set, fix, secure)
1
look after(verb, expression, keep, maintain, encourage)
1
loop in
1
maintain(verb, calm, fix, encourage, raise)
1
make a living(verb, expression, idiom, keep, maintain)
1
make callous(verb, expression, dull, develop, rough)
1
make firm(verb, expression, place, set, secure)
1
moor(verb, place, set, fix, secure)
1
multiply(verb, support, increase, sustain, uphold)
1
nail down(verb, expression, place, set, secure)
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APASmart Define. (2015). stiffen thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stiffen/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiffen thesaurus" https://smartdefine.org/stiffen/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, stiffen thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stiffen/thesaurus/synonyms>.
MLASmart Define. "stiffen thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/stiffen/thesaurus/synonyms>