adj. 1
Not physically attached; separated from something to which it could connect.
adj. 2
Having or showing no bias or emotional involvement; disinterested.
adj. 3
Of a house: not joined to another house on either side.
adj. 4
Not influenced by anyone else; characterized by an impersonal objectivity; impartial.

Example sentences

clinical Not all clinical studies are hypothesis-driven.
disinterested A disinterested third party resolved the dispute.
dispassionate Tom always sounds so dispassionate, no matter what he's talking about.
unconnected The possibility that the two events are unconnected is not worth considering.
unattached My coach asked me if I was "unattached" and I didn't understand so I said yes.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

4 letters: free¹, cold¹, dull¹
5 letters: loose¹
6 letters: candid², sundry², torpid²
7 letters: neutral², languid²
8 letters: separate³, clinical³, distinct², isolated⁴, discrete², unbiased³, uncaring³, listless²
9 letters: objective³, separated⁴, impartial³, equitable⁴, heartless², apathetic⁴, impassive³
10 letters: incoherent⁴, disjointed³, nonchalant³, unattached³, uninvolved³, phlegmatic³, insouciant³
11 letters: unconnected⁴, unconcerned³
12 letters: disconnected⁴, unprejudiced, unassociated
13 letters: disinterested⁴, dispassionate⁴
14 letters: unaffectionate

The small number after each word is its number of syllables (candid² = 2 syllables).