big O birthday - kulatiny, kulaté narozeniny

noun - the 10th, 20th, 30th, 40th etc. birthday

 

pensioner - důchodce, penzista

noun - a person who has reached a certain age, does not work anymore and gets money regularly from the government

 

teenaged - mladistvý, dospívající, náctiletý

adjective - young, of the age between 13 and 19

turn - stát se, změnit se, změnit barvu, změnit stav

verb - to become

 

ish - tak nějak, přibližně

adverb, informal - approximately, not exactly (usually added to a number)

 

minor - nezletilý

adjective - not of legal age, not old enough to be legally allowed to drink, vote, get married etc.

 

of age - plnoletý

adjective - old enough to be legally allowed to drink, vote, get married etc.

 

underage - nezletilý

adjective - not of legal age, not old enough to be legally allowed to drink, vote, get married etc.

 

under age - nezletilý

adjective - not of legal age, not old enough to be legally allowed to drink, vote, get married etc.

 

aged - ve věku (kolika let)

adjective - of the age of (+ number of years)

 

preschooler - předškolák

noun - a young child that has not started school yet, usually 2-5 years of age

 

oldster - stařík, stařena, babča, dědek

noun, informal - an old person

newborn - novorozeně

noun - a baby that has been born very recently

 

unborn - nenarozené dítě, ještě nenarozené dítě

noun - a baby that hasn't been born (yet)

 

unborn - nenarozený, ještě nenarozený

adjective - not born (yet)