Words about words

You are shy if you are feeling nervous or uncomfortable when you are with other people. A shy person may want to stay quiet or not speak first. People are often shy when they are new to a place, or when meeting strangers.

Signed is the past tense of sign, but usually meaning signing your name as a signature. For example, "I signed for the parcel" or "I have a signed warrant".

If you're being silly, you're acting funny or foolish instead of being serious.

Something is simple if it doesn't have a lot of elaborate parts, or is very easy to understand. The picture is of a very simple flower arrangement.
The opposite of simple might be elaborate, complicated or difficult.

If you are sinister you are frightening, threatening or intimidating.

The house in the picture is sinister.

Sipped is the past tense of sip.

A skate might be another word for a ice skate or roller skate. It might also describe the action of gliding over a surface wearing some kind of skates. Someone who skates is a skater.

Something is skinny if it is very thin, even to the point of being unhealthy.

You slap someone when you hit them with the back or front of your open hand.

Someone is slender if they are thin and graceful. Young women are often slender.