plural of leap second

(idiomatic) Dramatic improvements.

(idiomatic) Considerably; significantly.

An act or attempt without any idea about what the result will be.

(idiomatic) To appear suddenly in one's thoughts.

In the calendar reform, a week added to usual 52, such that every year starts on the same day

In the Jewish calendar or other lunisolar calendars, an extra month added to the usual 12 months because the solar year is slightly longer than 12 lunar months.

plural of leap of faith

plural of quantum leap

plural of leap month