それは怠ける口実にすぎない。

that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to be idle; to slacken; to neglect (e.g. one's work)

excuse; pretext

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to pass through; to pass by; to go beyond; to pass (i.e. of time); to elapse; to have expired; to have ended; to be over; to exceed; to surpass; to be above; to be no more than ...; to be excessive; to be too much; to be too ...