MOST, MOSTLY
ADVERBS
1300 — MOSTWHAT mostly, for the most part → obs.
1387 — FOR THE MOST DEAL for the most part, mostly → obs.
1549 — RATHEST most of all, most particularly, mainly → obs.
1666 — LARGEMOST most largely or considerably; most → obs.
1697 — UPON THE MAIN for the most part, mainly → obs.
1774 — FECKLY for the most part, mostly; almost → Sc. & N. Eng. dial.
1832 — ON THE MAIN for the most part, mainly → obs.
1853 — FECKLINS for the most part, chiefly, mostly → Sc.
1905 — FOR THE VERY MOST mostly → Eng. dial. (Bk.)
1943 — MOST-WISE especially, most of all → Amer. dial.
NOUNS
1867 — THICK END the greater part, the majority or most part → Eng. dial.