101. Call it a day: To decide or announce that one has finished the activity for the day.
102. Call it quits: To stop working on something; to give up.
103. Call the shots: To make key decisions and run things.
104. Call the tune: To be in charge and make decisions.
105. Call a spade a spade: To describe something as it really is, even if the truth is unpleasant.
106. Casting pearls before swine: To give something valuable to someone who does not understand that it is valuable.
107. Cat got your tongue: To be silent because you're too surprised or embarrassed to speak.
108. Cat nap: A short, light sleep; a doze.
109. Catch someone's eye: To attract someone's attention.
110. Catch-22: A dilemma from which there is no escape because of mutually conflicting rules or conditions.
111. Caught red-handed: To be caught while committing a misdeed or crime.
112. Change of heart: A reversal in one's feelings, opinion, or decision.
113. Chew the fat: To converse or talk informally, especially over a long period of time.
114. Chicken out: To decide not to do something out of fear.
115. Clear the air: To remove doubts or misunderstanding.
116. Climb the corporate ladder: To advance within a business or organization in terms of position and pay.
117. Close but no cigar: To fall just short of a successful outcome and get nothing for your efforts.
118. Cloud nine: A state of extreme joy.
119. Cock and bull story: An unbelievable tale.
120. Cold feet: To hesitate or back off when one is getting ready to commit to a task or decision.
121. Cold shoulder: To ignore or deliberately avoid someone.
122. Come hell or high water: No matter the difficulties or challenges.
123. Cost an arm and a leg: To be very expensive.
124. Crocodile tears: Fake or insincere tears.
125. Cry over spilled milk: To express regret about something that has already happened or cannot be changed.
126. Cry wolf: To give a false alarm.
127. Cut corners: To do something the cheapest or easiest way.
128. Cut the mustard: To meet the required standards, to succeed.
129. Dark horse: A candidate or competitor about whom little is known but who unexpectedly wins or succeeds.
130. Dead ringer: An exact or very close resemblance.
131. Devil's advocate: Someone who takes a position they do not necessarily agree with for the sake of debate or to explore the thought further.
132. Don't count your chickens before they hatch: Do not plan or rely on something good happening until it has actually happened.
133. Down in the dumps: Feeling unhappy or depressed.
134. Draw the line: To set a limit.
135. Drive someone up the wall: To irritate or annoy someone greatly.
136. Dime a dozen: Very common and of no particular value.
137. Drop in the bucket: A very small part of something big or whole.
138. Dressed to the nines: Very smartly or elegantly dressed.
139. Early bird catches the worm: One who arrives first has the best chance for success.
140. Easier said than done: More difficult than you think.
141. Elephant in the room: An obvious problem or risk no one wants to discuss.
142. Every cloud has a silver lining: There is a positive or hopeful side to most negative situations.
143. Eye for an eye: Retaliation in kind; getting revenge.
144. Face the music: Accept the unpleasant consequences of one's actions.
145. Feast or famine: Either too much or too little of something.
146. Feather in one's cap: A great achievement.
147. Fifth wheel: An unnecessary or extra person or thing.
148. Fish out of water: Someone in a situation that they are unsuited or unprepared for.
149. Fit as a fiddle: In good physical health.
150. Fly by the seat of one's pants: To do something by improvising, with no clear plans or rules.
151. Fly off the handle: To react in a wildly or hasty manner.
152. For the birds: Worthless or foolish.
153. Get the ball rolling: To start something, usually an event.
154. Get your act together: To organize yourself and get things done efficiently.
155. Give the cold shoulder: To ignore someone deliberately.
156. Go against the grain: To act in contradiction to the norms.
157. Go the extra mile: To make more effort than is expected.
158. Green thumb: A natural talent for growing plants.
159. Grin and bear it: To submit to a difficult situation with good humor.
160. Hair of the dog: A small amount of what has caused a hangover, supposed to cure the hangover.
161. Hand over fist: Quickly and in large amounts.
162. Hard pill to swallow: Unpleasant news or situation that is difficult to accept.
163. Have a blast: Have a great time or experience.
164. Head over heels: Completely, madly in love.
165. Hold your horses: Be patient.
166. Hot under the collar: Very angry or upset.
167. Jack of all trades: A person who is skilled in many different areas.
168. Jump the gun: To do something prematurely or too soon.
169. Keep an eye on: To watch, supervise, or care for.
170. Keep your chin up: Stay positive in a tough situation.
171. Kicked the bucket: To die.
172. Kill two birds with one stone: Get two tasks done with a single action.
173. Let the cat out of the bag: To accidentally reveal a secret.
174. Level playing field: A situation where all participants have a fair and equal chance of succeeding.
175. Make ends meet: To earn just enough money to live without getting into debt.
176. Miss the boat: To miss an opportunity.
177. Not playing with a full deck: To suggest someone is mentally deficient or crazy.
178. Off the hook: Free from responsibility.
179. Out of the frying pan and into the fire: When a situation goes from bad to worse.
180. Out of the blue: Completely unexpected.
181. Piece of cake: An easy task or job.
182. Pull the wool over someone's eyes: To deceive someone.
183. Put on the back burner: To postpone or delay.
184. Rain or shine: Regardless of the weather or circumstances.
185. Read between the lines: To infer or find out a hidden or implied meaning.
186. Red herring: A misleading clue or distraction.
187. Rule of thumb: A practical and approximate way of doing or measuring something.
188. See eye to eye: To agree fully.
189. Shake a leg: To hurry up.
190. Sink or swim: A situation where one must save themselves by their own means or fail by those same means.
191. Sit tight: To wait patiently.
192. Speak of the devil: The person we were just talking about shows up.
193. Steal someone's thunder: To take credit for something someone else did.
194. Take it with a grain of salt: Don't take what someone says too seriously.
195. The ball is in your court: It's up to you to make the next decision or step.
196. Through thick and thin: In both good and bad times.
197. Under the weather: Feeling ill or sick.
198. Up in the air: Undecided, uncertain, not resolved.
199. Wild goose chase: A futile and time-consuming pursuit.
200. You can't judge a book by its cover: You can’t make a decision based on outward appearance alone.