(idiomatic) Do not concern yourself with it; it is none of your business.

(idiomatic, informal) Used to positively assert the frank honesty of an associated statement of set of statements; equivalent to "to you tell the truth".

A polite expression used when the speaker is first introduced to someone.

Alternative form of back at you

(now formal) What is your opinion? What do you say?

(UK, Ireland, colloquial, US, obsolete) Expressing mock despair at somebody's outrageous behaviour.

(slang, vulgar) The tokay gecko (Gekko gecko), native to Southeast Asia.

A phrase said to introduce advice, i.e. to express what one would do in the interlocutor's situation.

Used to propose marriage to someone

Indicates that the speaker likes the interlocutor.