| adj. |
| [1] |
basic
,
elementary
,
essential
,
necessary
,
requisite
,
required
,
vital
,
indispensable
,
critical
,
fundamental
,
primary
,
principal
,
main
,
chief
|
| [2] |
standard
,
usual
,
habitual
,
ordinary
,
customary
,
prevailing
,
normal
,
conventional
,
universal
|
|
