Shotgun marriage - a marriage that is arranged to avoid embarrassment due to an unplanned pregnancy, rather than out of the desire of the participants.
I"ll cross that bridge when I come to it - something that you say in order to tell someone that you will not worry about a possible problem but will deal with it if it happens. Example - "- What if the flight is delayed? - I'll cross that bridge when I come to it"
To vie for - to strive in a competition for Example - Deborah spent most of the dinner staring blatantly at Steven, vying for his attention whenever possible.
Acquittal - judgement, as by a jury or judge, that the defendant is not guilty of a crime as charged. Example - "The jury quickly agreed on a verdict of not-guilty, and the acquittal was greeted by the populace with shouts of triumph."
Red-eye flight - any flight departing late at night and arriving early the next morning. Example - "My sources tell me he's taking the red-eye to Buenos Ayres"
Don't hold your breath - something that you say in order to tell someone that an event is not likely to happen. Example - "She said she would phone but don't hold your breath for that."
Far be it from (for) me to... - used to express reluctance to do something which one thinks may be resented. Example - "Far be it from me to speculate on his reasons" "Far be it from me to tell you what to do"
To tweak - to change something slightly especially in order to make it more suitable. Example - "The software is pretty much there - it just needs a little tweaking" "You just need to tweak the last paragraph and then it's done."
Pedestrian - without any imagination or excitement; dull; unimaginative. Example - "Her latest play is more pedestrian and less ambitious than her earlier work."
It's your dime - it essentially means it is your turn to talk. It derives from when pay phones used to cost a dime to make a call, so if you are the one who paid to make a call, you have the floor.
To read into - to attribute some interpretation or meaning to something, especially an unintended meaning. Example - "Don't read too much into her remark - it's hardly representative of her opinion."
To drag your heels/feet - to do something slowly because you do not want to do it. Example - "I suspect the management is dragging its heels on the case"
To hobnob - to mix socially, especially with those of perceived higher social status Example - "She often has her picture in the paper, hobnobbing with the rich and famous."
To clutch at straws - the act of reaching for a solution no matter how irrational or inconsequential. Example - "I'm clutching at straws here. I really don't know what to do."
To cut your teeth - to get your first experience of a particular type of work and learn the basic skills. Example - "She cut her teeth on a local newspaper before landing a job on a national daily"
Creature comforts - material comforts that contribute to physical ease and well-being, such as good food and accommodation. Example - "I'm a long way from home and the only creature comforts I have are a television."