- Definitions|2
- Thesaurus|584
- Abbreviations|0
| firmly(adverb, firm, severely, thoroughly, fully) | |
| tightly(adverb, hard, firm, thoroughly, strongly) | |
| fast(adjective, adverb, firm, thoroughly, strongly) | |
| fixedly(adverb, hard, firm, thoroughly, strongly) | |
| solidly(adverb, hard, firm, thoroughly, strongly) | |
| surely(adverb, safely) | |
| safely(adverb, safely) | |
| tenaciously(adverb, firm, firmly, definitely, resolutely) | |
| tight(adverb, hard, firm, thoroughly, strongly) | |
| firm(hard, firmly, steadfastly) | |
| inviolably(adverb, safely) | |
| rigidly(adverb, severely, thoroughly, strongly, firmly) | |
| snugly(adverb, tightly) | |
| steadily(adverb, firm, powerfully, strongly, firmly) | |
| cautiously(adverb, defensively) | |
| certainly | |
| cozily | |
| durably(adverb, severely, thoroughly, strongly, firmly) | |
| easily | |
| gainly |
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| APA | Smart Define. (2015). securely thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/securely/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "securely thesaurus" https://smartdefine.org/securely/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, securely thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/securely/thesaurus/synonyms>. |
| MLA | Smart Define. "securely thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/securely/thesaurus/synonyms> |