invariable
UK/in'vєәriәbl/US
TOEFLB2
Definitions
adj.
Not changing; always the same; constant
不变的，恒定的，始终如一的
Root Breakdown
Root-derivedin- (not) + vari (change) + -able = 'not able to change,' i.e. constant, always the same. The negative prefix flips a root about difference into one about steadiness.
Root var still carries 3 more wordsExample Sentences
- 1.
His daily routine has remained invariable for years.
- 2.
In this language, the plural form is invariable.
- 3.
The recipe follows one invariable rule: never rush the dough.