a bone of contention: something which people argue and disagree over.Examples: Medicaid costs have long been a bone of contention between counties and the state. How climate change will affect hurricanes has long been a bone of contention.

for the time being: temporarily (also: for now) Examples of FOR THE TIME BEING For the time being, you’ll need to get extra rest, until you’re healthy again. The project was almost done, but for the time being, it was horrible.

to make out: to read or see clearly; to prepare a legal document, such as a will, a check, Examples of TO MAKE OUT The letter was so poorly handwritten that I couldn’t make out many of the words. Harold, please make the check out to Acme Piano Company.

to know by sight: to recognize Examples of TO KNOW BY SIGHT I had a look around but as Jarrod’s Dad is the only one I know by sight it was a bit of a forlorn hope. If everybody doesn’t know everybody by name they’ll certainly know each other by sight.

to find out: get information about, to determine Examples of FIND OUT I’ll need to check my calendar to find out where I’m going to be that day. Jean couldn’t wait to leave his small town and was excited to find out what adventures Paris had in store for him!

out of date: not modern; not current, not timely; no longer available in published form Examples of OUT OF DATE The theme party had everyone listening to one-hit-wonders from the 1980s, wearing all sorts of out of date clothes. That study might be out-of-date, Schwartz said, but it does provide percentages.