Why is the ninth month called September?
"stretched tight," 1660s, from Latin tensus, past participle of tendere "to stretch" (see tenet). Sense of "in a state of nervous tension" is first recorded 1821.
"form of a verb showing time of an action or state," early 14c., tens "time," also "tense of a verb" (late 14c.), from Old French tens "time" (11c.), from Latin tempus (see temporal).
"to make tense," 1670s, from tense (adj.); intransitive sense of "to become tense" (often tense up) is recorded from 1946. Related: Tensed; tensing.
An inflectional (see inflection) form of verbs; it expresses the time at which the action described by the verb takes place. The major tenses are past, present, and future. The verb in “I sing” is in the present tense; in “I sang,” past tense; in “I will sing,” future tense. Other tenses are the present perfect (“I have sung”), the past perfect (“I had sung”), and the future perfect (“I will have sung”).