- Definitions|1
- Thesaurus|367
- Abbreviations|0
122 entries under adjective topic. ×
| long-drawn-out | |
| long-lived | |
| long-range | |
| long-term | |
| long haul | |
| permanent | |
| perpetual | |
| really into(expression, involved, absorbed, occupied) | |
| rooted | |
| set | |
| settled | |
| standing | |
| thoughtful(absorbed, pensive, reflective, brooding) | |
| timeless | |
| unconditional | |
| undying | |
| unending | |
| unlimited | |
| unqualified | |
| up to here(expression, idiom, involved, occupied) |
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| APA | Smart Define. (2016). deep in thought thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/deep_in_thought/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "deep in thought thesaurus" https://smartdefine.org/deep_in_thought/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, deep in thought thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/deep_in_thought/thesaurus/synonyms>. |
| MLA | Smart Define. "deep in thought thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/deep_in_thought/thesaurus/synonyms> |