The past simple and the past participle of underlie

Conjugation of the verb underlie:

Base Form/Infinitive without 'to':


Past Simple:


Past Partciple:


Present Partciple:


Third Person Singular:



1. To serve as a basis of or the foundation of something.
2. To be a hidden cause or the basis of an emotion or a situation.


1. The principles that underlie and motivate humanitarian responses need to be revised.
This article discusses the fundamental principles that underlie material chemistry.
2. I think that there are other causes that underlie his anger.

Similar verbs

The irregular verbs in the table below have the same pattern as underlie. They are:

- Verbs that are different from all the other patterns.
- Verbs like 'be, was/were, been'.

Verb Simple past Past Participle
be was/were been
do did done
go went gone
lie lay lain
saw sawed sawed/sawn
sew sewed sewed/sewn
show showed shown
sow sowed sown/sowed
strew strewed strewed/strewn
underlie underlay underlain
undo undid undone
unedrgo underwent undergone