on offer | being offered especially for sale |
on purpose | intentionally |
beyond a joke | nothing funny |
beyond the shadow of a doubt | certain |
by rights | legally or with reason |
for fear of | because sth might happen |
for the time being | temporary |
out of doors | outside |
out of luck | unlucky |
out of pocket | not to have money |
out of work | jobless |
under the cover of darkness | at night, secretly, furtively |
under suspicion | suspected |
on behalf of | in the interest of/ as a representative of |