Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending
to have a (rough) idea (of what the situation is)
see 見当がつかない
詳しいことが全部わかるまでは、あわててその場にふみこむな。見当がつくまでは、慎重にかまえておれ。Don't rush into the situation until you have all the details; hold your horses until you know where you are going.
Also written 見当が付く【けんとうがつく】