say it: LAHK-step
lockstep is a noun meaning "a standard procedure that is followed mindlessly". It carries 2 recorded senses.
a standard procedure that is followed mindlessly
“the union's support had been in lockstep for years”
a manner of marching in file in which each person's leg moves with and behind the corresponding leg of the person ahead
“the prisoner's ankles were so chained together that they could only march in lockstep”
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for lockstep come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.