Synonyms of essentials

1 Syllable

guts, heart, abcs, stuff, must

2 Syllables

lead-in, leadin, intro, hornbook

3 Syllables

groceries, exordium, element, rudiment, essence, condition, substance, principle

4 Syllables

introduction, nitty-gritty, quintessence, precondition, fundamental, requirement, requisite, introductions

5 Syllables

interpolation, prerequisite, prolegomenon, interpolations