I guess

I guess

I suppose; sure. Often used as an affirmative answer when one is not completely certain or does not want to fully commit. Bob: "You look a little down today. Everything alright?" Mary: "I guess. I've just been feeling vaguely melancholy lately." A: "It's supposed to be sunny today, right?" B: "I guess. I haven't checked the weather."
See also: guess
Farlex Dictionary of Idioms.

I guess (so).

 and I believe so.; I expect (so).; I suppose (so).; I suspect (so).; I think so.
a vague expression of assent. (Frequently, in speech, suppose is reduced to 'spose, and expect and suspect are reduced to 'spect. The apostrophe is not always shown.) Tom: Will it rain today? Bob: I suppose so. Sue: Happy? Bill: I 'spect. Sue: You don't sound happy. Bill: I guess not.
See also: guess

I guess

 and I expect; I suppose; I suspect 
1. a phrase that introduces a supposition. (Frequently, in speech, suppose is reduced to 'spose, and expect and suspect are reduced to 'spect. The apostrophe is not always shown.) Bob: I guess it's going to rain. Bill: Oh, I don't know. Maybe so, maybe not. Alice: I expect you'll be wanting to leave pretty soon. John: Why? It's early yet.
2. a vague way of answering 'yes'. John: You want some more coffee? Jane: I 'spose. Alice: Ready to go? John: I spect.
See also: guess
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • aint
  • ain't
  • be like ships in the night
  • be like ships that pass in the night
  • be ships that pass in the night
  • not for a second
  • not for a minute
  • not for a moment
  • not for a/one minute/moment/second/instant
  • not for a instant
References in classic literature
"An' I guess the government owes it to us for what our fathers an' mothers done.