1
tightly sealed(adjective, tight, proof, impervious, hermetic)
1
totally enclosed(adjective, tight, proof, impervious, hermetic)
1
tough
1
unforgetful
1
water-proof(adjective, tight, proof, impervious, hermetic)
1
water-tight(adjective, tight, proof, impervious, hermetic)
1
watertight(adjective, tight, proof, impervious, hermetic)
0
absorbent(adjective, liquid, spongy, porous, retaining)
0
coherent
0
deep
0
dissipated
0
dissolute
0
durable
0
accurate recollection(expression, idiom, memory)
0
adamant
0
adhesive
0
bound
0
bridle
0
capacious memory(expression, idiom, memory)
0
closely adhering(expression, idiom)
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APASmart Define. (2015). retentive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/retentive/thesaurus/synonyms
ChicagoSmart Define. 2015. "retentive thesaurus" https://smartdefine.org/retentive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, retentive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/retentive/thesaurus/synonyms>.
MLASmart Define. "retentive thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/retentive/thesaurus/synonyms>