MEANING
1. To enter a place or group gradually and secretly, often for a hostile or concealed purpose.
2. To enter or permeate tissue or another material, as cells or fluid do.
Use it for
Words that belong together
- infiltrate a group
- infiltrate a facility
On the page
The creature had infiltrated the facility through the service tunnels.
They feared someone had infiltrated the relief crew.
Nearby words
Related words
Word forms
- Base
- infiltrate
- Past tense
- infiltrated
- Past participle
- infiltrated
- Present participle
- infiltrating
Full tense & aspect guide
- Present
- infiltrate
- Present continuous
- am/is/are infiltrating
- Present perfect
- have/has infiltrated
- Present perfect continuous
- have/has been infiltrating
- Past
- infiltrated
- Past continuous
- was/were infiltrating
- Past perfect
- had infiltrated
- Past perfect continuous
- had been infiltrating
- Future
- will infiltrate
- Future continuous
- will be infiltrating
- Future perfect
- will have infiltrated
- Future perfect continuous
- will have been infiltrating
Choose the auxiliary that agrees with your subject. These are constructions of one word, not separate entries.
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Usage notes
Primary category: horror. Forms: infiltrate; infiltrates; infiltrated; infiltrated; infiltrating Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Third-person singular: infiltrates.
Practice this word in a sentenceYour margin notes
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