describes the situation where no one knows who anyone else is, where everyone is a total stranger to everyone else

(slang) to not know someone; to be strangers;

not knowing or recognising

lit. cannot become friends without a fight, meaning two had to go through some differences before coming to an agreement of become friends

(verb) don't know

illiterate

do not know the way or direction

don't understand the situation; not familiar with the situation

to know well

(verb) 1. learn and know; 2. learn (e.g. skills or knowledge)

a phrase used for advising others to be careful in getting to know or dealing with people

very happy to meet you; nice to meet you

to be made aware or conscious of

unable to fully exploit a good opportunity

understanding and considerate

(adjective) thrifting

being knowledgeable (idiom)

Intellectual

Knowledge-based economy

(noun) educated teens; young intellectual

Extraordinary courage

know how to observe the other expression; good at readings other people's thoughts and feelings; sensitive to the reactions of others

'Smart - knows what to do' (usually said in a complimentary way to describe someone who knows how to behave appropriately in a certain situation or is very skilful in handling tricky circumstances); to be tactful; to be suave

do not know something thoroughly

can only complain but cannot suggest (slang)

sensible

ability to earn money or reach a better status quo (spoken)

to see through (a trick or facade)

know the key points; shrewd; astute

To have a good taste about song; to understand something that one hears