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100 Idioms Every College Student Should Know

January 29, 2026

No. Term Definition
1. A blessing in disguise A good thing that seemed bad.
2. A dime a dozen Very common; not special.
3. A drop in the bucket A tiny amount; negligible.
4. A far cry from Very different from.
5. A fish out of water Uncomfortable in unfamiliar surroundings.
6. A leopard can’t change spots People rarely change their nature.
7. A long shot Unlikely to succeed.
8. A penny for your thoughts Tell me what you’re thinking.
9. A picture is worth 1,000 words Images convey meaning better than words.
10. A piece of cake Very easy to do.
11. A storm in a teacup A big fuss over little.
12. A tough nut to crack A difficult problem or person.
13. Against the clock Racing to finish before time.
14. All ears Listening attentively.
15. All in the same boat Sharing the same situation.
16. All talk, no action Says much; does little.
17. An arm and a leg Very expensive.
18. Around the clock Continuously; all day and night.
19. As cool as a cucumber Calm under pressure.
20. At the drop of a hat Immediately; without hesitation.
21. Back to square one Return to the beginning.
22. Barking up the wrong tree Pursuing the wrong cause.
23. Beat around the bush Avoid saying directly.
24. Beggars can’t be choosers Take what’s offered; no demands.
25. Bend over backwards Try very hard to help.
26. Bite off more than you can chew Take on too much.
27. Bite the bullet Face something painful bravely.
28. Break the ice Start conversation; ease tension.
29. Bring home the bacon Earn money; provide support.
30. Burn the midnight oil Work late into the night.
31. By the book Following rules exactly.
32. Call it a day Stop working for now.
33. Call the shots Be in charge; decide.
34. Catch-22 No-win situation; rules trap you.
35. Caught red-handed Caught doing something wrong.
36. Change of heart A shift in opinion.
37. Chip on your shoulder Resentful; ready to argue.
38. Cold feet Nervousness causing hesitation.
39. Cost an arm and a leg Be extremely expensive.
40. Cross that bridge later Deal with it when needed.
41. Cry over spilled milk Regret something that can’t change.
42. Cut corners Do something cheaply or carelessly.
43. Cut to the chase Get to the main point.
44. Devil’s advocate Argue opposite side to test ideas.
45. Don’t count your chickens Don’t assume success too early.
46. Don’t judge a book by cover Don’t judge by appearance.
47. Down to the wire At the last moment.
48. Drop the ball Make a mistake; fail duties.
49. Easy come, easy go Gained easily; lost easily.
50. Elephant in the room Obvious issue everyone ignores.
51. Every cloud has a silver lining Something good in every bad situation.
52. Face the music Accept consequences of actions.
53. Fall through the cracks Be overlooked or neglected.
54. Feather in your cap An achievement to be proud of.
55. Fight tooth and nail Fight fiercely; with determination.
56. Find your feet Become comfortable in new situation.
57. Fish for compliments Seek praise indirectly.
58. Fit as a fiddle In very good health.
59. For the birds Worthless; not worth attention.
60. Get a taste of your own medicine Receive same bad treatment given.
61. Get cold feet Lose nerve before action.
62. Get out of hand Become uncontrollable.
63. Get the hang of it Learn how to do something.
64. Get your act together Organize yourself; behave responsibly.
65. Give the benefit of doubt Assume good intentions without proof.
66. Go the extra mile Do more than required.
67. Good things come to those who wait Patience brings rewards.
68. Grain of salt Doubt; don’t take literally.
69. Hit the books Study hard.
70. Hit the nail on the head Be exactly right.
71. In a nutshell In brief; summarized.
72. In hot water In trouble.
73. In the same boat In the same situation.
74. It takes two to tango Both sides share responsibility.
75. Jump on the bandwagon Join a popular trend.
76. Jump the gun Start too early.
77. Keep an eye on Watch carefully.
78. Keep your chin up Stay positive despite difficulty.
79. Kill two birds with one stone Achieve two goals at once.
80. Know the ropes Understand how things work.
81. Last straw Final annoyance causing action.
82. Let the cat out of the bag Reveal a secret.
83. Like a needle in haystack Very hard to find.
84. Make ends meet Manage financially; cover expenses.
85. Miss the boat Lose an opportunity.
86. No pain, no gain Effort required for improvement.
87. Not my cup of tea Not something I like.
88. Off the top of my head From memory; without preparation.
89. On cloud nine Extremely happy.
90. On the fence Undecided.
91. Once in a blue moon Very rarely.
92. Out of the blue Suddenly; unexpectedly.
93. Out of the woods Safe from danger or trouble.
94. Over the moon Very delighted.
95. Pass the buck Shift responsibility to others.
96. Piece of the pie A share of benefits or money.
97. Pull an all-nighter Stay awake all night working.
98. Pull someone’s leg Joke; tease playfully.
99. Put all eggs in one basket Risk everything on one plan.
100. Put your foot in your mouth Say something embarrassing.

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