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"Siniestros" is a form of "siniestro", an adjective which is often translated as "sinister". "Seguros" is a form of "seguro", an adjective which is often translated as "safe". Learn more about the difference between "siniestros" and "seguros" below.
siniestro, el siniestro(
see
-
nyehs
-
troh
)An adjective is a word that describes a noun (e.g., the big dog).
1. (wicked)
a. sinister
Ese hombre me asusta; tiene una apariencia siniestra.That man frightens me; he has a sinister look.
El ladrón me echó una sonrisa siniestra y se echó a correr.The thief gave me a sinister smile and ran off.
b. evil
La policía descubrió los siniestros planes de los terroristas.The police uncovered the terrorists' evil plans.
2. (disastrous)
a. fateful
Quisiera olvidarme del día siniestro en que ninguna universidad a la que solicité me aceptó.I'd like to forget the fateful day on which I got rejected from every school I applied to.
3. (literary) (sinistral)
A word or phrase restricted in usage to literature or established writing (e.g., sex, once upon a time).
a. left
Su hijo se sentó a su mano diestra, y su hija a su siniestra.His son sat at his right side, and his daughter at his left.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
4. (calamity)
a. disaster
Después que pasó el huracán, el gobierno evaluó la magnitud del siniestro.After the hurricane passed, the government assessed the magnitude of the disaster.
b. catastrophe
La Cruz Roja está ayudando a las víctimas del siniestro.The Red Cross is helping the victims of the catastrophe.
5. (collision)
a. accident
Los socorristas finalmente llegaron al lugar del siniestro del avión.The emergency workers finally arrived at the site of the airplane accident.
seguro(
seh
-
goo
-
roh
)An adjective is a word that describes a noun (e.g., the big dog).
a. safe
El lugar más seguro de la casa durante un tornado es el sótano.The safest place in a house during a tornado is the basement.
3. (stable)
a. secure
No te encarames en esa silla, ¡no es segura!Don't climb up on that chair. It isn't secure!
En esta economía, los trabajos seguros no abundan.In this economy, there aren't a lot of secure jobs.
a. confident
Ahora soy una persona más segura que lo que era de más joven.I'm a more confident person now than when I was younger.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. insurance
Después del accidente me subieron la prima de seguro de coche.After the accident they raised my car insurance premium.
8. (device)
c. safety pin (Mexico)
Regionalism used in Mexico
Se me rompió el zipper, así que usé un seguro para cerrar el vestido.The zipper broke, so I used a safety pin to close the dress.