42.21

proper

legally proper

properly legal

legally possessed property

intellectual property

property rights

42.22

permissible

maximum permissible

permissible tolerance

permissible temperature

permissible limits

permissible speed

permissible load

legally permissible to do it

42.23

admissible

admissible tension

admissible value

admissible temperature

legally admissible in court

42.24

acceptable

acceptable uses

acceptable quality

acceptable level of

socially acceptable

acceptable alternative

acceptable outcome

legally acceptable

42.25

tolerable

tolerable risk

tolerable error

legally tolerable level of

Audio Credits: NASA, kennysvoice