n. 25B6; plural noun FUNDAMENTALS, essentials, rudiments, (first) principles, foundations, preliminaries, groundwork; essence, basis, core; informal nitty-gritty, brass tacks, nuts and bolts, ABC.
BASICS
Meaning of BASICS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012