This is a thread with Greek words, expressions and their meanings. I'll try to write as much as I can and remember. When I have time I'll expand it. For the moment this thread is closed, when I finish with all the letters I'll open it and then you can ask anything you want.
-A-
αβγό=egg
~ σιγά τ' αβγά - we use it to declare that something isn't important
~ κάτσε στ' αβγά σου [=sit on your eggs] - we say it when somebody is involved in someone else's business, behave well
~ αβγά σου καθαρίζουν; - we say it when somebody laughs without any obvious reason
~ ακόμη δε βγήκες απ' το αβγό σου - we say it when a kid behaves as if he knows everything while he hasn't experienced anything in his life yet
άβυσσος=abyss
~ στο χείλος της αβύσσου - just a bit before the destruction
άγαλμα=statue
~ αφήνω [κπ] άγαλμα - we say it when somebody is very surprised and he stays still
αγάπη=love
~ πουλώ αγάπη - I pretend to love sb
αγαπώ=to love
~ όπως αγαπάς=as you wish
άγγελος=angel
άγιος=saint
~ κάνω τον άγιο - I pretend to be nice
αγκαλιά=embrace, hug
αγκαλιάζω=to embrace
αγνός=pure
~ αγνή ψυχή - we say it when a person is very good
άγνωστος=unknown
αγορά=market
αγοράζω=to buy
~ αγρόν ηγόραζα - we say it when someone is busy with insignificant issues and he ignores the important ones
~ πουλώ και αγοράζω [κπ] - when somebody guides the others, he does with them whatever he wants
αγοραφοβία=the fear of the crowded places [I have agoraphobia ]
αγύριστος=not returned [object]
~ στον αγύριστο! - go to hell!, Get lost!, Go away and don't come back!
~ αγύριστο κεφάλι - a stubborn person
αέρας=air
~ αλλάζω τον αέρα μου - I go somewhere else [I travel] to get some rest and see something different
~ παίρνουν τα μυαλά μου αέρα - I think that I'm better than I really am, I become arrogant
~ λόγια του αέρα - words without importance, drivel
αθώος=innocent
~ αθώα περιστερά - somebody who pretends to be innocent
αθωώνω=to acquit sb
αίμα=blood
~ βράζει το αίμα μου - I'm full of life and energy
~ πίνω το αίμα κπ - I exploit sb without any mercy
~ δίνω το αίμα μου για κπ - I sacrifice myself, I do everything for sb else
~ φτύνω αίμα - we say it when something troubles us very much
~ παγώνει το αίμα μου - I get scared
~ μου κόψες το αίμα - you scared me to death
~ πνίγομαι στο αίμα - I'm bleeding very much
~ παίρνω το αίμα μου πίσω - I take revenge
~ το 'χω στο αίμα μου - it's in my dna
~ σιγά τα αίματα! - what a big deal!, we say it when we want to lessen the importance of something
αιμορραγώ=to bleed
αίσθημα=feeling
~ τρέφω αισθήματα για κπ - I have feelings for sb
~ παίζω με τα αισθήματα κάποιου - I play with sb's feelings
ακούω=to hear
αλεπού=fox
~ πονηρή αλεπού - we call like this a cunning person
~ όσα δε φτάνει η αλεπού... - we say it when somebody says that smth doesn't deserve the trouble and in reality he can't do it
αλήθεια=truth
~ η μαύρη/πικρή αλήθεια - when the truth hurts, but however we have to tell it
αλλάζω=to change
~ αλλάζω γνώμη/άποψη - I change my mind
~ αλλάζω/γυρίζω σελίδα - I totally change my life and begin from the beginning
άλογο=horse, something without reason
~ πράσινα άλογα [=green horses ] - something which isn't true, without any reason, exaggeration
άλφα=a, the first letter of the Greek alphabet
~ άλφα άλφα - something of very good quality
~ το άλφα και το ωμέγα - the beginning and the ending of smth
ανάβω=to light
~ ανάβουν τα αίματα - they get really angry and quarrel
~ μου ανάβουν τα λαμπάκια - I get on my nerves
~ την ανάβω σε κπ - I shoot sb
~ ανάβω φωτιές - I cause trouble
αναπνέω=to breathe
αναπνοή=breath
~ κρατώ την αναπνοή μου - I hold my breath, I don't breath for a while [we also say it when we expect to hear great/important news]
~ σε απόσταση αναπνοής - very close, small distance
~ μου κόβεται η αναπνοή - I stop breathing for a while cause of health problems or terror or perhaps surprise
ανάποδα=upside down, backwards, inside out
~ παίρνω ανάποδες - I get on my nerves
~ ξυπνώ ανάποδα - I wake up with bad mood
~ παίρνω κάτι απ' την ανάποδη - I misunderstand smth
~ ξέρω κάτι απ' την καλή κι απ' την ανάποδη - I know smth very well
ανάσα=breath [same with αναπνοή]
ανασαίνω=to breathe
άνδρας and άντρας=man
ανεβαίνω=to go up, to rise
~ μου ανεβαίνει το αίμα στο κεφάλι - I get very angry
άνεμος=wind
~ μιλάμε περί ανέμων και υδάτων - we have a light chat about everything and nothing in particular
~ είμαι όπου φυσάει ο άνεμος - I'm not a stable person
~ ούριος άνεμος - propitious conditions
άνεση=comfort, convenience
~ με την άνεσή σου! - take your time!
άνετος=comfortable
~ το παίζω άνετος - I pretend to be cool
άνοιγμα=opening
ανοίγω=to open
~ ανοίγω τα μάτια - literally: I open my eyes, metaphorically: I see the truth
~ ανοίγω την καρδιά μου σε κπ - I open myself to sb, I tell him my secrets, thoughts and fears
~ ανοίγω το στόμα μου - literally: I open my mouth, metaphorically: I reveal secrets
~ ανοίγω βιβλίο - I study
~ ανοίγω πληγές - I bring back painful memories
~ ανοίγω τα χαρτιά μου - I reveal my intentions on smth
~ ανοίγουν οι ουρανοί - it rains a lot
~ ανοίγω το κεφάλι κάποιου - I hit sb badly
~ άνοιξε η γη και τον κατάπιε! - He disappeared!
αντέχω=to bear
αντιπροσωπεύω=to represent
αξία=value, virtue
αξίζω=to deserve, to worth
~ αξίζει τον κόπο - it worths all the trouble, to fight for it
~ δεν αξίζει μία - it doesn't worth it
άξιος=deserving, capable
~ είμαι άξιος της μοίρας μου - I deserve what I'm going through
απάντηση=answer
απαντώ=to answer
αρπάζω=to catch, to grab
~ την αρπάζω - I get sick, I catch a cold
~ τις άρπαζω - sb beats me
~ αρπάζομαι εύκολα - I get mad easily
αρχή=beginning
~ κατ' αρχάς - firstly [when we want to say something important before we say all the others]
~ κατ' αρχήν - firstly [when we want to say smth in general before we go to the main subject]
~ κάνω την αρχή - I start
~ απ' την αρχή - from the beginning
~ στην αρχή - at the beginning
αρχίζω=to start, to begin
άσπρος=white
~ άσπρη μέρα - happy moment
αύριο=tomorrow
~ από αύριο σε αύριο - when we postpone always smth
αφήνω=to let, to leave
~ αφήνω την τελευταία μου πνοή - I die
~ αφήνω χρόνους - I die
~ αφήνω στην τύχη - I give up on smth and I let fate to "decide" about it
~ αφήνω κάποιον στο δρόμο - I abandon sb
~ αφήνω κάποιον στο σκοτάδι - I don't inform sb about smth, I don't tell him the truth [without to lie of course]
~ αφήνω εποχή - I become well known because of my actions
~ αφήνω κπ στον τόπο - I kill sb
~ άσ' το - drop it! leave it!
~ αφήνω κτ στην άκρη - I put aside smth
αφορμή=cause, motive, reason
~ ψάχνω αφορμή - I look for a motive to do smth
~ δίνω αφορμή - I give the right to sb to do smth
αφτί=ear
~ μου μπήκαν ψύλλοι στ' αφτιά - I start to have suspicions
~ δεν ιδρώνει τ' αφτί μου - I don't care about everything I hear
~ είμαι όλος αφτιά - I listen carefully
~ υπερήφανος στ' αφτιά - we say it when sb doesn't hear well
~ χαϊδεύω τ' αφτιά κπ - I flatter sb, I tell him what he wants to hear
~ πέφτουν τ' αφτιά μου - Ι'm humiliated
~ χρεωμένος ως τ' αφτιά - I have many debts
~ παίρνω τ' αφτιά κάποιου - I talk much or make noise and I bother sb
~ στήνω αφτί - I overhear