sixmonth means half a year. Lexicurio rates it Sui generis — a strength score of 98 out of 100.
Etymology
Equivalent to six + month.
noun
- Half a year.“It is hardly necessary to add that the above is entirely false, and that a gentle Zephyr is incapable of upsetting an immense vessel with 120 cannon, 1000 men, and provisions and ammunition for a sixmonth's voyage.”