prerequisite or requisite
what is the word for sensitive that is hardly ever used
The plural of necessity is necessities.
The abstract noun of the adjective "necessary" is "necessity."
A synonym for waterspout would be tornado.
Pure aluminium is expensive.
No.
seldom
It would be not often or infrequently
what is the word for sensitive that is hardly ever used
Primarily Protestants use the term 'christening' as a synonym for Baptism. It is rarely heard in proper Catholic circles.
An unfair comparison can be rewritten as "a discriminatory association". One-sided, lopsided, uneven, unjust, biased
No, let is a verb, or more rarely a noun. The past participle is also let, but it is not used formally as an adjective. The usual adjective is the synonym allowed.
Commonly, thermics may refer to any of several physical topics involving heat. It has also been used as a synonym for thermodynamics, but is only rarely used in this way today.
The term soldier has the synonyms combatant, fighter, or warrior.(The term troop is rarely used in the singular, but "trooper" might fit some uses.)
shed can sometimes be used as a synonym
Both expressions are commonly used and accepted in English, but "the necessity of" is slightly more common and traditional than "the necessity for." Either can be used depending on personal preference or context.
Nonmetal is a frequently used synonym for metalloid.