There are several possible synonyms for "in-submissions", depending on the context. For example, if we are referring to documents or forms that have not been submitted, some possible synonyms might include "unsubmitted", "pending", "unfinished", or "incomplete". If we are referring to a lack of cooperation or compliance, then possible synonyms might include "nonconformity", "noncompliance", "defiance", or "resistance". Depending on the particular situation, some other possible synonyms for "in-submissions" might include "neglect", "disregard", "default", or "omission". Ultimately, the most appropriate synonym will depend on the specific context and intended meaning of the term.