especially◼◼◼(particularly) adverb [UK: ɪ.ˈspe.ʃə.li] [US: ə.ˈspeʃ.l̩i]She likes fruit, especially apricots. = Elle aime les fruits, surtout les abricots.
mainly◼◼◼(chiefly; for the most part) adverb [UK: ˈmeɪn.li] [US: ˈmeɪn.li]They mainly live on milk. = Ils se nourrissent surtout de lait.
primarily◼◼◼(of a primary or central nature) adverb [UK: ˈpraɪ.mə.rə.li] [US: praɪ.ˈme.rə.li]
mostly◼◼◼(for the most part) adverb [UK: ˈməʊst.li] [US: ˈmoʊst.li]His sickness was mostly in his head. = Sa maladie était surtout dans sa tête.
chiefly◼◼◻(mainly or principally, almost entirely) adverb [UK: ˈtʃiː.fli] [US: ˈtʃiː.fli]