Tingliest is an adjective that describes a sensation of being tingly or having a prickly feeling. There are a few synonyms that can be used to describe this sensation, including: 1. Tingling - this is the most direct synonym for tingliest, as both words describe a tingly feeling. 2. Prickling - this word is often used to describe a tingling sensation that comes on suddenly and is quite intense. 3. Electrifying - this word is used to describe sensations that feel like electric shocks, which can also be described as tingling or prickling. 4. Numbing - this word describes a sensation that causes a lack of feeling or reduced sensation, which is sometimes associated with tingling. All of these words convey the feeling of a tingling or prickling sensation in different ways.