in accordance with fact or reality; not false, wrong, or made-up

a true story

genuine or real

true love

properly or strictly so called

Spiders are not true insects

basic or essential

the true nature of socialist economics

accurate

a true copy

said of a musical note: properly in tune

said of a compass bearing: determined or measured according to the earth's geographical poles, as distinct from its magnetic poles

correctly or accurately fitted, adjusted, or aligned

upright or level

steadfast, loyal, or trusted

a true friend

(usu + to) consistent or conforming, e.g. to a standard or to expectations

honest and trustworthy; truthful

speak, sad brow and true maid — Shakespeare