particular
adjective
1 the action seems to discriminate against a particular group of companies:
specific, certain, distinct, separate, isolated;
single, individual, peculiar, discrete, definite, express, precise.
▷antonyms general.
2 an issue of particular importance:
special, extra special, especial, exceptional, unusual, marked, singular, uncommon, notable, noteworthy, remarkable, outstanding, unique;
formal peculiar.
▷antonyms ordinary.
3 he was particular about what he ate:
fussy, fastidious, meticulous, punctilious, discriminating, selective, painstaking, exacting, demanding, critical, over-particular, over-fastidious, finicky, faddish, finical, dainty;
informal choosy, picky;
British, informal faddy, pernickety;
North American, informal persnickety;
archaic nice.
▷antonyms careless, easy-going, laid-back.
particular Oxford Dictionary of English