100 Other Ways to Say “I Don’t Know”

No.	Term	Definition
1.	A bit unsure	Not completely certain.
2.	A mystery to me	I have no idea.
3.	Above my pay grade	Not for me to decide.
4.	All I can say is…	I can’t confirm details.
5.	Anyone’s guess	No one knows for sure.
6.	Beats me	I don’t know.
7.	Beyond me	I can’t understand it.
8.	Can’t say	I don’t know or won’t say.
9.	Can’t say for sure	Not certain.
10.	Can’t tell	I can’t determine that.
11.	Couldn’t tell you	I don’t know.
12.	Difficult to say	Hard to determine.
13.	Don’t ask me	I don’t know.
14.	Don’t have a clue	I don’t know at all.
15.	Don’t have the answer	I can’t answer that.
16.	Don’t know	I’m not sure.
17.	Drawing a blank	I can’t recall.
18.	Dunno	I don’t know.
19.	Escapes me	I can’t remember.
20.	Far as I know, no	Not to my knowledge.
21.	Far as I know, yes	To my knowledge, yes.
22.	For all I know	Possibly, but I’m unsure.
23.	Got me	I don’t know.
24.	Hard to tell	Unclear right now.
25.	Haven’t a clue	I don’t know at all.
26.	Haven’t the faintest	No idea whatsoever.
27.	I can’t confirm that	I’m not sure it’s true.
28.	I can’t help there	I don’t know.
29.	I can’t place it	I can’t remember where.
30.	I can’t recall	I don’t remember.
31.	I can’t say	I don’t know or won’t.
32.	I can’t speak to that	I lack knowledge on it.
33.	I can’t tell	I can’t determine it.
34.	I couldn’t say	I don’t know.
35.	I don’t have that info	I lack the information.
36.	I don’t know either	I also don’t know.
37.	I don’t know yet	Not determined yet.
38.	I don’t remember	I can’t recall.
39.	I don’t rightly know	I’m not sure.
40.	I have no clue	I don’t know at all.
41.	I have no idea	I don’t know.
42.	I haven’t checked	I don’t know yet.
43.	I haven’t heard	I’m not aware.
44.	I haven’t looked	I don’t know yet.
45.	I haven’t the foggiest	No idea at all.
46.	I’ll find out	I will check and report.
47.	I’ll get back to you	I’ll check and respond later.
48.	I’m at a loss	I don’t know what to say.
49.	I’m in the dark	I’m not informed.
50.	I’m not aware	I don’t know about that.
51.	I’m not certain	I’m unsure.
52.	I’m not convinced	I’m not sure it’s true.
53.	I’m not in the loop	I’m not informed.
54.	I’m not positive	I’m not sure.
55.	I’m not sure	I’m uncertain.
56.	I’m out of the loop	I’m not informed.
57.	I’m stumped	I can’t figure it out.
58.	If I had to guess	This is only a guess.
59.	It rings no bell	I don’t recognize it.
60.	It’s anyone’s guess	No one knows.
61.	It’s beyond me	I can’t understand it.
62.	It’s hard to say	Uncertain.
63.	It’s not clear	Uncertain or ambiguous.
64.	It’s not my area	Not my expertise.
65.	It’s unclear	Not certain.
66.	Let me check	I’ll look it up.
67.	Let me confirm	I’ll verify.
68.	Let me find out	I’ll investigate.
69.	Let me get back	I’ll respond later.
70.	Let’s see	I need to check.
71.	No clue	No idea.
72.	No idea	I don’t know.
73.	Not a clue	No idea.
74.	Not in my wheelhouse	Not my expertise.
75.	Not on my radar	I wasn’t aware.
76.	Not sure	Uncertain.
77.	Not that I know of	To my knowledge, no.
78.	Out of my depth	Beyond my knowledge.
79.	Pass	I can’t answer.
80.	Search me	I don’t know.
81.	That’s a good question	I don’t know right now.
82.	That’s beyond my scope	Outside my responsibility.
83.	That’s not my call	Not my decision.
84.	That’s not my field	Not my expertise.
85.	That’s unclear	Not certain.
86.	That’s unknown	Not known.
87.	There’s no telling	Impossible to know now.
88.	Too early to say	Not enough information yet.
89.	Unclear to me	I’m uncertain.
90.	Unknown to me	I don’t know.
91.	Wish I knew	I don’t know.
92.	Wouldn’t know	I don’t know.
93.	Your guess is as good	I don’t know either.
94.	Zany as it sounds, unsure	I’m uncertain.
95.	Zapped from memory	I can’t recall.
96.	Zebra’s guess	Just a guess.
97.	Zen says: I don’t know	I don’t know.
98.	Zero idea	No idea at all.
99.	Zettabytes away from me	Far beyond my knowledge.
100.	Zilch	Nothing; no idea.