Casual
In an informal way, yes they are synonymous.
An informal synonym for the term optimal is the word ace. Ideal is also a good synonym, as well as matchless. There are a lot of other synonyms that can be found in a thesaurus or online.
Yes, it is. It is the opposite of the word formal (not formal), and a synonym of casual or unofficial.
A synonym for "Hi" is "Hello." Other informal greetings include "Hey" and "Greetings." These expressions serve the same purpose of acknowledging someone's presence.
a concavity or depression - (informal) an attractive person
No. The word "alright" is an informal variant of the adverb phrase "all right." Both mean "certainly."
A synonym for "doesn't" is "does not." This contraction is commonly used in informal contexts, while its full form can be used in more formal writing. Both convey the same meaning of negation in relation to an action or state.
synonyms for expert: * authority * professional * specialist * master * virtuoso * connoisseur * scholar * whiz (informal) * veteran
It could be drive or pitch.Alternatively it could be an informal verb for to anger or to start.
quotidian, recurring, customary, simple, vulgar, vernacular, usual, frequent, idiomatic, colloquial, conversational, informal, familiar, common
Another word for "minus" is "negative." It can also be referred to as "subtracted" in mathematical contexts. In informal language, "less" is often used as a synonym.
PROFLIGATE, prodigal, squanderer, waster informal big spender.