Rigor is something strict, severe or demanding. 1  Harsh and strict treatment in the military for cadets is an example of rigor. 2  Freezing weather and ice are examples of the rigors of winter.  Difficult and challenging academic courses are an example of academic rigor.
The suffix gram means to draw or write. This is used in telegram.
-le. 1  a suffix of verbs having a frequentative force: dazzle; twinkle. 2  a suffix of adjectives formed originally on verbal stems and having the sense of âapt toâ: brittle. 3  a noun suffix having originally a diminutive meaning: bramble. 4  a noun suffix indicating agent or instrument: beadle; bridle; thimble.