ことだし

ことだし is a conjunctive expression used to give a reason or set of reasons before making a suggestion or proceeding with a plan. It conveys a softer, reasoning tone similar to saying “since …” or “and also …” in English. The first clause often states a situation or circumstance, and the following clause presents the result or intended action. It is common in written Japanese and in thoughtful, explanatory speech. The nuance is more formal and reflective than casual し・ので, and it can imply there are other factors as well, but the sentence continues to the main point.