4
bemused
4
lost(adjective, thoughtful, involved, absorbed, engaged)
3
preoccupied(adjective, involved, absorbed, engaged, dreamy)
2
deep(adjective, absorbed, engaged, dreamy, faraway)
2
fixed(adjective, involved, engaged, captivated, engrossed)
2
lost in thought(expression, adjective, idiom, thoughtful, absorbed)
2
meditative(adjective, thoughtful, absorbed, pensive, reflective)
2
rapt(adjective, thoughtful, involved, absorbed, engaged)
1
absorbed(adjective, thoughtful, occupied, engaged, dreamy)
1
ceaseless
1
chronic
1
confirmed
1
continuing
1
dateless
1
deathless
1
deep-rooted
1
deep-seated
1
endless
1
enduring
1
engaged(adjective, involved, absorbed, dreamy, captivated)
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APASmart Define. (2016). deep in thought thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/deep_in_thought/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep in thought thesaurus" https://smartdefine.org/deep_in_thought/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, deep in thought thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/deep_in_thought/thesaurus/synonyms>.
MLASmart Define. "deep in thought thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/deep_in_thought/thesaurus/synonyms>