mistrustful

UK: /ˌmɪsˈtrʌstf^əl/ US: (mis trust′fəl)

WordReference Random House Unabridged Dictionary of American English © 2026

mis•trust•ful  (mis trust′fəl), adj. 

1. full of mistrust;
   suspicious.

• mistrust + -ful 1520–30

mis•trust′ful•ly, adv. 
mis•trust′ful•ness, n. 

WordReference Random House Learner's Dictionary of American English © 2026

mis•trust /mɪsˈtrʌst/   n. 

[uncountable]
1. lack of trust or confidence;
   distrust:
   eyes full of mistrust.

v. [~ + object]

2. to look at or think about (someone) with suspicion;
   distrust:
   I mistrust anyone who uses an initial for his first name.

mis•trust•ful, adj.: 

staring with mistrustful eyes.

WordReference Random House Unabridged Dictionary of American English © 2026

mis•trust  (mis trust′), n. 

1. lack of trust or confidence;
   distrust.

v.t. 

2. to regard with mistrust, suspicion, or doubt;
   distrust.
3. to surmise.

v.i. 

4. to be distrustful.

• Middle English mistrusten (verb, verbal), mistrust (noun, nominal). See mis-¹, trust 1350–1400

mis•trust′er, n. 
mis•trust′ing•ly, adv.