This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To displace from a settled condition; disrupt.

v. To make uneasy; disturb.

verb-intransitive. To become unsettled.

v. To make upset or uncomfortable

v. To bring into disorder or disarray

v. To move or loosen from a settled position or state; to unfix; to displace; to disorder; to confuse.

verb-intransitive. To become unsettled or unfixed; to be disordered.

To change from a settled state; make to be no longer fixed, steady, or established; unhinge; make uncertain or fluctuating: as, to unsettle doctrines or opinions.

To move from a place; remove. To disorder; derange; make mad: as, to unsettle a person's intellect.

To become unfixed; give way; be disordered.

v. disturb the composure of

"Levi says his work is designed to 'unsettle' viewers by challenging preconceptions of certain materials and objects."

settle   

unsettled    unsettles    unsettling   

discompose    untune    disconcert    upset    discomfit   

unman   

unfix    displace    disorder    confuse   

Gretel    betel    kettle    metal    mettle    nettle    petal    resettle    settle   

disturb    uncertain    uneasy    frighten    depress    perplex    disconcert    unsatisfactory    Embarrass    excite